From 12b590a1503bc4a8cce132b55dee1a1b5544598d Mon Sep 17 00:00:00 2001
From: Max Ghenis <mghenis@gmail.com>
Date: Fri, 23 Oct 2026 19:10:52 -0400
Subject: [PATCH 1/4] Allocate Census residuals through shared reference
 profiles

Implement d1886 Census household-size and tenure allocation through the shared
allocated_residual_by_ratio operation and one resolve_reference_profiles API.
Keep regional residuals local, preserve independent national diagnostics, add
MAR and small-household profiles plus V4, and prepare all 136 size indicators.

Verification below identifies every invariant and its checking tests. Final
execution counts and named-mutant evidence follow.
All test IDs below are relative to:
packages/microcosm-build/tests/engine_free/shared/

Design section 6 invariants and their checks:

1. Regional closure: both size profiles and allocated tenure close to each
   region's published Census household total, then that total times its ERP
   ratio, using fsum with rel_tol=1e-12 and abs_tol=1e-7. Retain fractional
   targets and each region's own computed residual.
   - test_nz_target_references.py::test_inventory_asserts_exact_regional_residual_table
   - test_nz_target_references.py::test_real_artifact_regional_closure_shares_and_sensitivity
   - test_nz_target_references.py::test_scaled_tenure_values_are_fractional_exact_bridges_and_national_diagnostics_are_separate
   - test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once

2. MAR shares: allocated cross-products preserve stated shares, including
   zero-valued leaves.
   - test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once
   - test_nz_target_references.py::test_real_artifact_regional_closure_shares_and_sensitivity

3. Sensitivity recipients: only stated sizes 1 and 2 receive additions, in
   their stated proportions; total size counts stay fixed. Tenure remains
   proportional across all three source atoms in both residual profiles.
   - test_ledger_allocated_residual.py::test_sensitivity_exact_recipients_and_increment_ratio
   - test_nz_target_references.py::test_residual_profiles_have_exact_recipient_rosters_and_preserve_other_targets
   - test_nz_target_references.py::test_real_artifact_regional_closure_shares_and_sensitivity

4. Sensitivity comparison: against MAR, sizes 3-8 lose their MAR additions;
   against stated counts under the same ERP scaling, they remain unchanged.
   - test_ledger_allocated_residual.py::test_sensitivity_exact_recipients_and_increment_ratio
   - test_nz_target_references.py::test_sensitivity_removes_mar_additions_from_sizes_three_to_eight

5. ERP commutation: A(qx,qT,E)=qA(x,T,E); apply the paired growth ratio once.
   The exact-rational oracle also checks generated output-group partitions.
   - test_ledger_allocated_residual.py::test_exact_rational_oracle_for_partitions_recipients_groups_and_growth
   - test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once
   - test_nz_target_references.py::test_all_17_erp_ratios_match_the_reviewed_source_table
   - test_nz_target_references.py::test_real_artifact_regional_closure_shares_and_sensitivity

6. Grouping: allocating tenure atoms and then grouping source categories 1+3
   equals allocating the owned group directly; category 3 stays in the exact
   atomic partition. Facts reused in growth roles are counted once per role.
   - test_ledger_allocated_residual.py::test_grouping_preserves_the_third_atomic_member
   - test_ledger_allocated_residual.py::test_growth_roles_may_reuse_total_or_atom_without_double_counting
   - test_ledger_allocated_residual.py::test_exact_rational_oracle_for_partitions_recipients_groups_and_growth

7. Region separation: keep all 17 Census regions, preserve geography 99 and
   its explicit national-growth proxy, and make unrelated regions inert.
   Never substitute national residuals for local residuals or equate 99 to
   territorial authority 999. The regional size/tenure residual sums remain
   61,713/429; independent national diagnostics remain 61,725/426.
   - test_nz_target_references.py::test_inventory_has_exact_contract_counts_and_named_parking_reasons
   - test_nz_target_references.py::test_inventory_asserts_exact_regional_residual_table
   - test_nz_target_references.py::test_published_regional_totals_and_national_totals_remain_independent_diagnostics
   - test_nz_target_references.py::test_region_99_is_a_separate_national_growth_proxy_and_ta_999_has_no_erp
   - test_ledger_allocated_residual.py::test_explicit_proxy_preserves_output_geography
   - test_ledger_allocated_residual.py::test_prefilter_keeps_every_auxiliary_selector_and_unrelated_rows_are_inert

8. Source preservation: selectors contain no observations; source facts and
   raw published totals/leaf sums/discrepancies remain unchanged. Inventory
   receipts explicitly classify residuals and allocated outputs as computed.
   - test_ledger_allocated_residual.py::test_receipt_labels_keys_and_preserves_base_geography_and_raw_facts
   - test_nz_target_references.py::test_source_discrepancies_remain_unreconciled_and_no_totals_enter_the_fit
   - test_reference_profiles.py::test_observed_values_cannot_enter_effective_references
   - test_reference_profiles.py::test_unselected_profiles_cannot_carry_observed_values

9. Preparation: validate household/member identities and memberships, refuse
   duplicates, missing identities, orphans and empty households, and derive
   usual-resident household roster counts. The 136 region-by-size indicators
   partition each valid household exactly once; size 8 includes 9+ members.
   Prepared columns cannot overwrite the validated roster count.
   - test_calibration_columns.py::test_household_size_indicators_partition_all_regions_and_include_nine_people
   - test_calibration_columns.py::test_household_roster_refuses_invalid_membership
   - test_calibration_columns.py::test_prepared_columns_cannot_overwrite_a_validated_roster_count
   - test_calibration_columns.py::test_all_active_calibration_bindings_enter_the_small_frame_matrix

10. Profile identity: references, intervals, preparation and problem bindings
    use one selection identity and exact effective-document hashes. Preserve
    full raw-resource identity while projecting effective documents to the
    compiler's strict country/schema_version/hierarchy/target_references keys.
    Bind the prepared column inventory, values and identity axis as well.
    - test_reference_profiles.py::test_resolution_is_pure_and_binds_effective_documents
    - test_reference_profiles.py::test_effective_document_projects_resource_headers_and_binds_full_base
    - test_nz_target_references.py::test_full_nz_resource_resolves_directly_to_the_strict_compiler_document
    - test_transport_target_kernels.py::test_profile_compilation_checks_actual_reference_document_hash
    - test_transport_target_kernels.py::test_preparation_and_resolution_evidence_bind_the_problem
    - test_transport_target_kernels.py::test_problem_refuses_stale_interval_or_preparation_profile
    - test_transport_target_kernels.py::test_decode_resolved_surface_requires_the_resolution_receipt
    - test_transport_target_kernels.py::test_decode_surface_refuses_stale_resolution_evidence
    - test_transport_target_kernels.py::test_preparation_requires_its_effective_interval_companion
    - test_transport_composed_graph.py::test_preflight_and_composition_use_the_same_resolved_reference_view
    - test_transport_composed_graph.py::test_preflight_checks_the_selected_variant_reference_status

Additional section 6 properties and refusal contracts:

- Hypothesis compares nonnegative counts, recipient subsets, output-group
  partitions and valid growth ratios with an exact Fraction oracle. It covers
  zero leaves, zero residual, grouping, input reordering and unrelated-region
  facts, with generated invalid cases exercising both normal selector
  resolution and direct pre-resolved compilation.
  Checking IDs:
  test_ledger_allocated_residual.py::test_exact_rational_oracle_for_partitions_recipients_groups_and_growth
  test_ledger_allocated_residual.py::test_generated_invalid_partition_rosters_refuse

- Exact typed atomic membership goes beyond cardinality: reject missing,
  duplicate, substituted, string/float-coerced and out-of-partition members;
  reject total-in-partition, wrong universes, changed source snapshots,
  periods/vintages, negative/nonfinite facts and incomplete selectors.
  Checking IDs:
  test_ledger_allocated_residual.py::test_refuses_invalid_atomic_partitions_on_both_compilation_paths
  test_ledger_allocated_residual.py::test_declared_base_roster_must_match_its_count_and_partition
  test_ledger_allocated_residual.py::test_constructor_rejects_base_roster_members_outside_partition
  test_ledger_allocated_residual.py::test_partition_dimension_filters_cannot_change_the_total_universe
  test_ledger_allocated_residual.py::test_only_exact_typed_category_equalities_are_removed_from_universe
  test_ledger_allocated_residual.py::test_total_and_atoms_require_same_typed_shared_dimension_values
  test_ledger_allocated_residual.py::test_reference_contract_refuses_unpaired_or_malformed_operands
  test_ledger_allocated_residual.py::test_future_count_period_cannot_bypass_consumer_period_policy
  test_ledger_allocated_residual.py::test_generated_invalid_partition_rosters_refuse

- Negative residuals always refuse; no clipping and no signed reconciliation.
  Zero residual with zero recipient mass is an explicit identity branch;
  positive residual with zero recipient mass refuses.
  Checking IDs:
  test_ledger_allocated_residual.py::test_negative_residual_is_refused_without_clipping
  test_ledger_allocated_residual.py::test_zero_residual_with_zero_recipient_mass_is_identity
  test_ledger_allocated_residual.py::test_positive_residual_with_zero_recipient_mass_refuses

- Growth operands come as one complete pair with matching source series and
  periods, positive denominator and a ratio in (0.5,2]. Cross-geography growth
  requires an explicit proxy while the output keeps its base geography.
  Checking IDs:
  test_ledger_allocated_residual.py::test_growth_operand_refusals_on_both_paths
  test_ledger_allocated_residual.py::test_reference_contract_refuses_unpaired_or_malformed_operands
  test_ledger_allocated_residual.py::test_explicit_proxy_preserves_output_geography

- Raw size and tenure rows cannot compile unresolved or be promoted through
  activation_status alone. Only a transformation satisfying the declared
  prerequisite activates the row; unrelated prerequisites remain parked.
  Checking IDs:
  test_ledger_allocated_residual.py::test_raw_reference_profile_requirement_cannot_be_promoted_by_status
  test_nz_target_references.py::test_raw_tenure_and_size_cannot_bypass_profile_resolution
  test_nz_target_references.py::test_raw_tenure_refuses_even_when_all_real_operands_are_present
  test_reference_profiles.py::test_transformation_must_satisfy_its_declared_profile_prerequisite
  test_reference_profiles.py::test_unsatisfied_prerequisites_remain_parked_after_transformation

- One country-neutral resolver selects explicit reference-name lists, applies
  disjoint transformations deterministically, refuses unknown/unavailable
  selections, missing names, duplicate/overlapping transformations, unsupported
  factors/interval transformations, repeated resolution and stale evidence.
  Unselected-profile edits leave selected identities unchanged. The independent
  aging_index dimension is reserved: central is explicitly deferred; low/high
  remain unavailable until G8-r2 supplies the ageing transformations.
  Checking IDs:
  test_reference_profiles.py::test_unknown_or_unavailable_profiles_refuse
  test_reference_profiles.py::test_invalid_transformations_refuse
  test_reference_profiles.py::test_resolution_is_pure_and_binds_effective_documents
  test_reference_profiles.py::test_stale_effective_documents_and_receipts_refuse
  test_reference_profiles.py::test_unrelated_profiles_do_not_change_effective_identity
  test_reference_profiles.py::test_disjoint_transformations_are_deterministic
  test_nz_target_references.py::test_v4_changes_only_the_residual_knob_and_prior_variants_keep_their_meaning

- Shared arithmetic/profile tests use synthetic consumer declarations. Country
  packages remain spec-only, with no Python entrypoints; transport retains its
  country-name/runtime and float-literal guards. Country values live in spec
  JSON, and no country-specific solver or frozen kernel is changed.
  Checking IDs and inspection:
  test_transport_target_kernels.py::test_kernels_declare_honest_country_neutral_contracts
  test_transport_graph.py::test_transport_modules_import_no_country_runtime_and_name_no_country
  test_transport_graph.py::test_transport_modules_carry_no_float_literal
  test_transport_composed_graph.py::test_transport_python_has_no_policy_literal_or_remote_path
  test_spec_only_country_packages.py::test__given_country_packages__then_no_python_files_are_present
  test_spec_only_country_packages.py::test__given_country_specs__then_no_python_entrypoints_are_declared
  Static diff inspection covers the frozen-file exclusion and shared modules.

Parked-target and scenario scope:

- Raw calibration counts are 64 active, 170 requiring profile resolution and
  539 otherwise parked; effective MAR and small-household documents have 234
  active and 539 parked references. A read-only HEAD row-payload comparison
  retains the other 603 calibration rows, all 318 precal rows and all 6 holdout
  rows. Families, IRD, receipt assignments, NZ Super and VP remain parked.
  Checking IDs:
  test_nz_target_references.py::test_residual_profiles_have_exact_recipient_rosters_and_preserve_other_targets
  test_nz_target_references.py::test_every_parked_row_refuses_direct_compilation
  test_nz_target_references.py::test_grouped_tenure_family_multiplicities_and_parked_definitions
  test_nz_target_references.py::test_receipt_snapshots_are_split_and_stratified_inputs_stay_parked
  test_calibration_columns.py::test_family_multiplicity_is_a_measure_while_nucleus_activation_stays_blocked

- V1/V2 keep low/high ageing; V3 keeps beneficiary assignment; V4 changes only
  residual allocation to small_households. Gates and reporting include V4.
  Checking IDs:
  test_nz_target_references.py::test_v4_changes_only_the_residual_knob_and_prior_variants_keep_their_meaning
  test_nz_spec_package.py::TestScenarios::test_committed_grid_satisfies_the_scenario_contract

Feed, regeneration, disclosures and golden:

- Keep the Chronicle 8f4cfd573c0d6f580d9c51cd67e8f449a42ed174 feed pin. Recompute
  the design's exact regional residual table from its Census rows. QES/PREFU
  rows stay unused. Regenerate with tools/generate_nz_target_references.py and
  verify --check against NZ_CHRONICLE_ARTIFACT.
  Checking IDs:
  test_nz_target_references.py::test_generation_reproduces_committed_resources_with_exact_feed_identity
  test_nz_target_references.py::test_inventory_asserts_exact_regional_residual_table
  test_nz_target_references.py::test_changed_feed_identity_refuses_authoring_before_reference_compilation
  test_transport_target_kernels.py::test_target_kernels_enforce_full_feed_pin

- Disclose MAR, locally computed residuals, the national/regional differences,
  proportional tenure including family trusts, V4's recipients, fractional
  targets, one ERP bridge and the separate region-99 proxy. Preserve raw
  diagnostics and per-region/profile receipts with tolerance and provenance.
  Checking IDs and inspection:
  test_nz_target_references.py::test_source_discrepancies_remain_unreconciled_and_no_totals_enter_the_fit
  test_nz_target_references.py::test_published_regional_totals_and_national_totals_remain_independent_diagnostics
  Static inspection of generator disclosure, reference_inventory.json,
  docs/nz-calibration-targets.md and docs/nz-take-up-engine-plan.md.

- Regenerate nz_country_spec.json with
  canonical_json_bytes(_loaded_spec_summary("nz")). Only fingerprint,
  resource_hashes and resources move: eight existing resource hashes change,
  reference_profiles.json adds one hash and one resource-list entry, and the
  fingerprint becomes d970b6e900b7f5d455a86158718703444ac91c15d49b2203720fc2bdf2baba7d.
  Checking ID:
  test_country_spec.py::TestGoldenCountrySpecs::test_loaded_spec_matches_the_golden_file_byte_for_byte[nz]

Reviewer mutants: all 18 killed; 25 expected failed checks and 41 passing
controls across final mutant runs. Each mutation was restored. Actual red IDs:
- wrong_recipients_23: 1 failed, 1 passed in 25.50s
  test_nz_target_references.py::test_residual_profiles_have_exact_recipient_rosters_and_preserve_other_targets
- allocation_denominator_total: 2 failed, 1 passed in 1.42s
  test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once[False]
  test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once[True]
- small_denominator_all_leaves: 1 failed, 1 passed in 1.45s
  test_ledger_allocated_residual.py::test_sensitivity_exact_recipients_and_increment_ratio
- drop_tenure_trust_3: 1 failed, 1 passed in 1.05s
  test_ledger_allocated_residual.py::test_grouping_preserves_the_third_atomic_member
- national_residual_per_region: 1 failed, 1 passed in 6.03s
  test_nz_target_references.py::test_generation_reproduces_committed_resources_with_exact_feed_identity
- total_in_partition: 1 failed, 1 passed in 0.21s
  test_ledger_allocated_residual.py::test_reference_contract_refuses_unpaired_or_malformed_operands[total_in_partition]
- duplicate_replaces_missing_atom: 1 failed, 1 passed in 0.18s
  test_ledger_allocated_residual.py::test_refuses_invalid_atomic_partitions_on_both_compilation_paths[substituted-True]
- coerce_member_type: 1 failed, 1 passed in 0.75s
  test_ledger_allocated_residual.py::test_refuses_invalid_atomic_partitions_on_both_compilation_paths[float-True]
- clip_negative_residual: 2 failed, 1 passed in 0.76s
  test_ledger_allocated_residual.py::test_negative_residual_is_refused_without_clipping[False]
  test_ledger_allocated_residual.py::test_negative_residual_is_refused_without_clipping[True]
- zero_residual_divide_by_zero: 2 failed, 1 passed in 2.61s
  test_ledger_allocated_residual.py::test_zero_residual_with_zero_recipient_mass_is_identity[False]
  test_ledger_allocated_residual.py::test_zero_residual_with_zero_recipient_mass_is_identity[True]
- erp_applied_twice: 1 failed, 2 passed in 1.34s
  test_ledger_allocated_residual.py::test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once[True]
- drop_region_99: 1 failed, 1 passed in 0.86s
  test_nz_target_references.py::test_inventory_has_exact_contract_counts_and_named_parking_reasons
- region_99_relocated_to_NZ: 1 failed, 1 passed in 2.71s
  test_nz_target_references.py::test_residual_profiles_have_exact_recipient_rosters_and_preserve_other_targets
- prune_auxiliary_selectors: 1 failed, 1 passed in 1.38s
  test_ledger_allocated_residual.py::test_prefilter_keeps_every_auxiliary_selector_and_unrelated_rows_are_inert
- raw_tenure_bypasses_profile: 1 failed, 1 passed in 5.62s
  test_nz_target_references.py::test_raw_tenure_refuses_even_when_all_real_operands_are_present
- stale_interval_or_preparation_profile: 1 failed, 1 passed in 5.13s
  test_transport_target_kernels.py::test_problem_refuses_stale_interval_or_preparation_profile[selection]
- observed_value_in_reference: 5 failed, 23 passed in 1.18s
  test_reference_profiles.py::test_observed_values_cannot_enter_effective_references[value]
  test_reference_profiles.py::test_observed_values_cannot_enter_effective_references[values]
  test_reference_profiles.py::test_observed_values_cannot_enter_effective_references[observed]
  test_reference_profiles.py::test_observed_values_cannot_enter_effective_references[observed_value]
  test_reference_profiles.py::test_unselected_profiles_cannot_carry_observed_values
- size_8_means_exactly_8: 1 failed, 1 passed in 3.10s
  test_calibration_columns.py::test_household_size_indicators_partition_all_regions_and_include_nine_people

Final execution evidence: 2,470 passed across 16 targeted files, with five
optional UK feed/authentication checks skipped (CHRONICLE_UK_FACTS unavailable).
- test_calibration_columns.py: 39 passed
- test_country_spec.py: 136 passed
- test_ledger_allocated_residual.py: 89 passed
- test_ledger_grouped_roll_forward.py: 52 passed
- test_ledger_targets.py: 436 passed
- test_nz_spec_package.py: 1192 passed
- test_nz_target_references.py: 46 passed
- test_reference_profiles.py: 28 passed
- test_spec_engine_country_bundles.py: 21 passed
- test_spec_only_country_packages.py: 18 passed
- test_transport_composed_graph.py: 145 passed
- test_transport_gate_bindings.py: 126 passed
- test_transport_graph.py: 15 passed
- test_transport_target_kernels.py: 33 passed
- test_uk_ledger_targets.py: 64 passed
- test_uk_target_references.py: 30 passed, 5 skipped

Generator --check: exit 0 against Chronicle 8f4cfd573c0d6f580d9c51cd67e8f449a42ed174.
Ruff check: all checks passed on 18 changed Python files.
Ruff format --check: 18 files already formatted.
tools/ci_test_plan.py verify: verification=ok.
git diff --check: exit 0.
Final scope audit: 31 implementation files;
no frozen-source edits; zero float literals
in the 19 transport Python modules. Golden resource hashes all match.
HEAD row audit: exactly 136 size + 34 tenure rows changed; other 603
calibration rows, all 318 precal rows and all 6 holdout rows unchanged.

The exact legacy NZ resource-list assertion now includes reference_profiles.json
(test_spec_engine_country_bundles.py:237; corrected full run 21 passed).
The spec-only guard admits canonical Ledger recipient keys only in exact
typed partition rosters pinned by member selectors; 18 passed including
two positive and eight refusal cases for this narrow data-field support.

Corrected validation history is retained: initial Hypothesis too_slow health
check (1 failed, 66 passed) was corrected without dropping any examples or
assertions; final allocation file passed 89. Initial resource-list assertion
was 1 failed, 20 passed, followed by 21 passed. The duplicate-atom mutant
initially survived because its count change triggered a separate guard;
the fixture now preserves counts, its rerun is red, and the full 89 pass.

Changelog: changelog.d/nz-census-residual-profiles.added.md.
Production NZ graph assembly and B5 ageing remain separate; one resolver
API is the extension point.

Co-Authored-By: GPT-6.1 Sol <noreply@openai.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../nz-census-residual-profiles.added.md      |     5 +
 docs/nz-calibration-targets.md                |    19 +
 docs/nz-take-up-engine-plan.md                |    37 +-
 .../microcosm/build/calibration_columns.py    |   106 +-
 .../src/microcosm/build/ledger_targets.py     |   588 +-
 .../build/nz/calibration_bindings.json        |  2639 +-
 .../microcosm/build/nz/country_package.json   |     5 +
 .../src/microcosm/build/nz/gates.json         |     6 +-
 .../microcosm/build/nz/precal_references.json |     2 +-
 .../build/nz/reference_inventory.json         | 12469 ++-
 .../build/nz/reference_profiles.json          | 70619 ++++++++++++++++
 .../build/nz/reporting_classifiers.json       |     3 +-
 .../src/microcosm/build/nz/scenarios.json     |    47 +-
 .../microcosm/build/nz/target_references.json |  1817 +-
 .../src/microcosm/build/reference_profiles.py |   278 +
 .../build/transport/artifact_types.py         |     5 +
 .../src/microcosm/build/transport/compose.py  |   144 +-
 .../microcosm/build/transport/entitlement.py  |    15 +-
 .../build/transport/takeup_kernels.py         |     6 +
 .../build/transport/target_kernels.py         |   351 +-
 .../shared/test_calibration_columns.py        |   119 +-
 .../shared/test_ledger_allocated_residual.py  |   672 +
 .../shared/test_nz_spec_package.py            |     5 +-
 .../shared/test_nz_target_references.py       |   421 +-
 .../shared/test_reference_profiles.py         |   293 +
 .../test_spec_engine_country_bundles.py       |     1 +
 .../shared/test_spec_only_country_packages.py |   110 +-
 .../shared/test_transport_composed_graph.py   |   130 +-
 .../shared/test_transport_target_kernels.py   |   256 +-
 .../tests/golden/nz_country_spec.json         |    20 +-
 tools/generate_nz_target_references.py        |   279 +-
 31 files changed, 90272 insertions(+), 1195 deletions(-)
 create mode 100644 changelog.d/nz-census-residual-profiles.added.md
 create mode 100644 packages/microcosm-build/src/microcosm/build/nz/reference_profiles.json
 create mode 100644 packages/microcosm-build/src/microcosm/build/reference_profiles.py
 create mode 100644 packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
 create mode 100644 packages/microcosm-build/tests/engine_free/shared/test_reference_profiles.py

diff --git a/changelog.d/nz-census-residual-profiles.added.md b/changelog.d/nz-census-residual-profiles.added.md
new file mode 100644
index 0000000000..329e2f8157
--- /dev/null
+++ b/changelog.d/nz-census-residual-profiles.added.md
@@ -0,0 +1,5 @@
+Add shared, validated proportional residual allocation and reference-profile
+resolution. New Zealand's d1886 Census size and tenure profiles retain regional
+totals, disclose computed residuals, and add the V4 small-household sensitivity.
+Validated roster preparation supplies size indicators and binds preparation to
+the effective reference and interval identities.
diff --git a/docs/nz-calibration-targets.md b/docs/nz-calibration-targets.md
index 1049e97b61..7ed4c9b4f2 100644
--- a/docs/nz-calibration-targets.md
+++ b/docs/nz-calibration-targets.md
@@ -36,6 +36,25 @@ Ranked by calibration value for a dollar-level take-up estimate. **$** = enables
 | 14 | **NZ Superannuation demographics** | MSD Fact Sheets (NZS/VP) + Annual Report (941,511 recipients; $23.19B) | $ / # | Largest transfer by dollars; near-universal but needs the age×region recipient frame. [FETCH-OK] |
 | 15 | **Minimum wage series + average weekly earnings** | MBIE minimum wage ($23.95 from Apr 2026) + Stats NZ QES/LEED | $ | Anchors the bottom of the earnings distribution and the national/TA earnings margin. [FETCH-OK min wage; SNIPPET QES/LEED] |
 
+**d1886 modelling convention, 23 October 2026.** Microcosm allocates Census
+counts with unstated household size across stated size categories in proportion
+to their stated counts, assuming missing at random. Each region's allocated
+amount is its independently published household total minus its stated size
+leaves. The national calculation is 61,725 households; regional calculations sum
+to 61,713 because the independently published cells do not reconcile exactly.
+These regional differences and allocated leaves are Microcosm calculations,
+rather than Stats NZ published residual cells or allocated estimates.
+
+Tenure uses the same proportional convention for owned, including family
+trusts, and not owned. Its national difference is 426; regional differences sum
+to 429. V4 allocates the size residual only to one- and two-person households in
+their stated proportions. Fractional targets are retained. Allocation precedes
+one application of the B2 ERP bridge. Region 99 remains separate and uses the
+disclosed national-growth proxy. Raw discrepancies and national diagnostics
+remain in `reference_inventory.json` alongside computed regional profile
+receipts. Model household size counts validated usual-resident roster members,
+with sizes eight and above sharing the final category.
+
 **Dollar-level calibration design (numerator/denominator):**
 - **Denominator (full-entitlement modelled $):** our own rules × calibrated population. Treasury DistributionExplorer CSVs (#5) are TAWA-modelled; AS values assigned by TAWA's take-up model; an independent comparison, not full entitlement, for AS; TAWA assumes full take-up for the WFF credits ([TAWA methodology](https://treasury.govt.nz/sites/default/files/2024-08/tawa-model-methodology.pdf), "Modelling take-up").
 - **Numerator (actual $ paid):** MSD Annual Report expenditure schedule (#2) and AN24/01 fiscal totals (#10); IRD WfF expenditure (#4) for in-work credits.
diff --git a/docs/nz-take-up-engine-plan.md b/docs/nz-take-up-engine-plan.md
index df0d7f0fc2..5a5d6a536f 100644
--- a/docs/nz-take-up-engine-plan.md
+++ b/docs/nz-take-up-engine-plan.md
@@ -16,14 +16,15 @@ Support Survey 2022, findings pack 7); an IDI-based estimate puts Working for
 Families (WFF) take-up at about 87% in 2020 (McLeod and Wilson 2022, targets
 inventory M5).
 
-## Status: 7 October 2026
+## Status: 23 October 2026
 
 The spec-only [NZ country package](../packages/microcosm-build/src/microcosm/build/nz/country_package.json)
-compiles through the shared country seam. It is a declared layout, not a
-calibrated population or a release: every target reference is an unactivated
-placeholder, the threshold-bearing gates read "awaiting D1", and no NZ graph
-node exists yet. Donor records are US support records and are never presented
-as New Zealand microdata.
+compiles through the shared country seam. It declares active demographic
+references and profile-resolved Census size and tenure references, with other
+unresolved target definitions parked. Production graph assembly and calibrated
+population evidence remain separate; threshold-bearing gates still read
+"awaiting D1". Donor records are US support records and are never presented as
+New Zealand microdata.
 
 The package replaces the stage-era scaffold of
 [#821](https://github.com/PolicyEngine/microcosm/pull/821). It keeps #821's
@@ -62,7 +63,7 @@ nz.create (CREATE) ── nz.open (FILTER keep-all: transport, geography, receip
                          │      │      └── nz.scn.S0 … nz.scn.S5 (FILTER each)
                          │      ├── nz.validate (FILTER: WFF tripwire, parked)
                          │      └── nz.terminal (FILTER: bands, diagnostics, gates, export)
-                         └── nz.v.V1 … nz.v.V3 (FILTER each: variant → calibrate → AS → gap)
+                         └── nz.v.V1 … nz.v.V4 (FILTER each: variant → calibrate → AS → gap)
 ```
 
 - **CREATE is to build the benefit units.** Entity ids and person
@@ -97,8 +98,9 @@ nz.create (CREATE) ── nz.open (FILTER keep-all: transport, geography, receip
 | `as_area_crosswalk.json` | Work and Income area definitions; the TA → AS area population shares are a placeholder (`rows: []`, `status: requires_harvest`) until harvested | `nz.geo.support` | MC9 |
 | `axiom_rules_bindings.json` | rulespec-nz pin, five module bindings, variables, the `2026-27` tax-year period | every Axiom-bound node | MC1 |
 | `target_references.json` | the calibration set (MC5 list), generated cell-pinned by `tools/generate_nz_target_references.py` and summarized in `reference_inventory.json`; unresolved definitions stay parked with named reasons | `nz.targets.compile` | MC5 |
+| `reference_profiles.json`, `calibration_bindings.json` | d1886 MAR and small-household residual declarations, plus validated usual-resident roster counts and all 136 region-by-size indicators; the shared resolver produces effective references before activation | reference resolution and calibration preparation | MC5 |
 | `as_rate_bridge.json` | reg 17 base rate and reg 18 cutout composition | `nz.as.bridge.*` | MC11 |
-| `scenarios.json` | S0–S5, V1–V3, knobs, gap conventions (×52) | scenario and variant branches | MC3, MC12 |
+| `scenarios.json` | S0–S5, V1–V4, knobs, gap conventions (×52); V4 selects the small-household residual sensitivity | scenario and variant branches | MC3, MC12 |
 | `holdout_references.json` | AS comparators and the WFF tripwire | gap and validation nodes only | MC2, MC5 |
 | `gates.json` | the gate battery, evaluated with the shared transport bindings (`transport/gate_bindings.py`); fit and admin-aggregate tolerances follow d1376 (each target within 5%, demography within 2%, administrative anchors within 5%); support and release-input coverage remain applicable and block builds until their producers and evidence checks exist | `nz.gates.calibrated` | MC15 |
 | `export_contract.json` | the closed export contract | export nodes | — |
@@ -111,12 +113,23 @@ transport.
 ### Reference sets
 
 - **Calibration (MC5):** active are region × age population (all sexes, four
-  age bands) and tenure × region (owned, including family trusts, and not
-  owned). Census 2023 tenure is scaled to June 2025 by each region's ERP ratio,
-  and region 99 by the national ratio. Declared but parked until their
-  definitions or producers exist: Census household size and family type, IRD
+  age bands). Size × region and tenure × region (owned, including family
+  trusts, and not owned) require the d1886 profile resolver before execution.
+  Their allocated Census 2023 counts receive each region's June 2025 ERP ratio
+  once; region 99 uses the national-growth proxy. Declared but parked until
+  their definitions or producers exist: Census family type, IRD
   taxable-income bands (counts and totals), MSD main-benefit recipients, and NZ
   Super and Veterans Pension recipients (counted separately).
+
+G8-r1b implements Max's d1886 residual-allocation convention through shared
+target arithmetic and the common reference-profile resolver. Central size and
+tenure targets close to each region's published Census household total before
+the existing ERP bridge. Calibration variant V4 concentrates only the size
+residual onto one- and two-person households. The implementation preserves raw
+discrepancies and independent national diagnostics, and supplies validated size
+columns before activation. G8-r2 reuses the same resolver for ageing profiles
+and interval preparation; central ageing remains explicitly deferred and V1/V2
+ageing transformations remain unavailable until that work lands.
 - **Pre-calibration:** IRD wage and salary bands, MBIE bond rents by TA, Stats
   NZ household financial net worth, TA population, and the same MSD recipient
   facts as the calibration set (the take-up draws calibrate to them).
diff --git a/packages/microcosm-build/src/microcosm/build/calibration_columns.py b/packages/microcosm-build/src/microcosm/build/calibration_columns.py
index 990230ec65..be3897d360 100644
--- a/packages/microcosm-build/src/microcosm/build/calibration_columns.py
+++ b/packages/microcosm-build/src/microcosm/build/calibration_columns.py
@@ -1,15 +1,15 @@
 """Prepare simple calibration columns from an explicit, engine-free contract.
 
 Geography and canonical concepts must already be present. This helper creates
-only constants and conjunctions of declared predicates; receipt assignment and
-statistical-unit construction belong to their own producers.
+constants, validated roster counts and conjunctions of declared predicates;
+receipt assignment and statistical-unit construction belong to their own producers.
 """
 
 from __future__ import annotations
 
 import math
 from collections.abc import Mapping
-from numbers import Real
+from numbers import Integral, Real
 from typing import Any
 
 import numpy as np
@@ -49,6 +49,8 @@ def prepare_calibration_columns(
             _validate_input(tables[entity][name], domain, f"{entity}.{name}")
 
     out = {entity: table.copy(deep=True) for entity, table in tables.items()}
+    derived = _prepare_roster_counts(out, bindings.get("roster_counts", ()), required)
+    prepared: dict[str, dict[str, object]] = {}
     seen: set[tuple[str, str]] = set()
     for entry in columns:
         if not isinstance(entry, Mapping):
@@ -57,7 +59,12 @@ def prepare_calibration_columns(
         if entity not in required or not isinstance(name, str) or not name:
             raise ValueError("Calibration column needs a declared entity and name.")
         key = (entity, name)
-        if key in seen or name in required[entity] or name.endswith("_id"):
+        if (
+            key in seen
+            or name in required[entity]
+            or name in derived.get(entity, ())
+            or name.endswith("_id")
+        ):
             raise ValueError(
                 f"Calibration output {entity}.{name} is repeated or structural."
             )
@@ -66,7 +73,7 @@ def prepare_calibration_columns(
             value = entry["constant"]
             if "predicates" in entry or not _finite_number(value):
                 raise ValueError(f"Calibration constant {entity}.{name} is invalid.")
-            out[entity][name] = value
+            prepared.setdefault(entity, {})[name] = value
             continue
         predicates = entry.get("predicates")
         if not isinstance(predicates, (list, tuple)) or not predicates:
@@ -76,7 +83,10 @@ def prepare_calibration_columns(
             if not isinstance(predicate, Mapping):
                 raise ValueError("Calibration predicates must be objects.")
             column = predicate.get("column")
-            if column not in required[entity] or "value" not in predicate:
+            if (
+                column not in {*required[entity], *derived.get(entity, ())}
+                or "value" not in predicate
+            ):
                 raise ValueError(
                     f"Calibration predicate needs a validated {entity} input."
                 )
@@ -93,7 +103,15 @@ def prepare_calibration_columns(
             else:
                 raise ValueError(f"Unsupported calibration predicate {operator!r}.")
             mask &= part.to_numpy(dtype=bool)
-        out[entity][name] = mask
+        prepared.setdefault(entity, {})[name] = mask
+    for entity, values in prepared.items():
+        original_order = list(out[entity].columns)
+        computed = pd.DataFrame(values, index=out[entity].index)
+        out[entity] = pd.concat(
+            [out[entity].drop(columns=list(values), errors="ignore"), computed], axis=1
+        )
+        order = original_order + [name for name in values if name not in original_order]
+        out[entity] = out[entity].loc[:, order]
     return out
 
 
@@ -103,10 +121,82 @@ def _finite_number(value: object) -> bool:
     )
 
 
+def _identity(value: object) -> tuple[type, object]:
+    if (
+        isinstance(value, bool)
+        or not isinstance(value, (str, Integral))
+        or isinstance(value, str)
+        and not value
+    ):
+        raise ValueError(
+            "Calibration membership identities must be strings or integers."
+        )
+    return (str, value) if isinstance(value, str) else (int, int(value))
+
+
+def _prepare_roster_counts(
+    tables: dict[str, pd.DataFrame], entries: object, required: Mapping[str, Any]
+) -> dict[str, set[str]]:
+    if not isinstance(entries, (list, tuple)):
+        raise ValueError("Calibration roster_counts must be a list.")
+    derived: dict[str, set[str]] = {}
+    for entry in entries:
+        if not isinstance(entry, Mapping):
+            raise ValueError("Calibration roster count must be an object.")
+        entity, members, name = (
+            entry.get("entity"),
+            entry.get("member_entity"),
+            entry.get("name"),
+        )
+        group_id, member_id, membership = (
+            entry.get("entity_id"),
+            entry.get("member_id"),
+            entry.get("membership"),
+        )
+        if (
+            entity not in required
+            or members not in required
+            or not isinstance(name, str)
+            or not name
+            or name.endswith("_id")
+            or name in required[entity]
+            or name in derived.get(entity, ())
+            or group_id not in required[entity]
+            or member_id not in required[members]
+            or membership not in required[members]
+            or not isinstance(entry.get("representation"), str)
+            or not entry["representation"]
+        ):
+            raise ValueError(
+                "Calibration roster count needs declared identities and representation."
+            )
+        groups = [_identity(value) for value in tables[entity][group_id].tolist()]
+        identities = [_identity(value) for value in tables[members][member_id].tolist()]
+        if len(set(groups)) != len(groups) or len(set(identities)) != len(identities):
+            raise ValueError(
+                "Calibration roster contains duplicate membership identities."
+            )
+        counts = dict.fromkeys(groups, 0)
+        for value in tables[members][membership].tolist():
+            key = _identity(value)
+            if key not in counts:
+                raise ValueError("Calibration roster contains orphan membership.")
+            counts[key] += 1
+        if any(count == 0 for count in counts.values()):
+            raise ValueError("Calibration roster contains empty households or groups.")
+        tables[entity][name] = [counts[key] for key in groups]
+        derived.setdefault(entity, set()).add(name)
+    return derived
+
+
 def _validate_input(values: pd.Series, domain: Mapping[str, Any], name: str) -> None:
     if values.isna().any():
         raise ValueError(f"Calibration input {name} contains missing values.")
-    if domain.get("kind") == "nonnegative_integer":
+    if domain.get("kind") == "identity":
+        for value in values.tolist():
+            _identity(value)
+        valid = True
+    elif domain.get("kind") == "nonnegative_integer":
         valid = all(
             _finite_number(value) and value >= 0 and value == int(value)
             for value in values.tolist()
diff --git a/packages/microcosm-build/src/microcosm/build/ledger_targets.py b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
index 3cb926ef3c..ba023498a9 100644
--- a/packages/microcosm-build/src/microcosm/build/ledger_targets.py
+++ b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
@@ -15,6 +15,7 @@
 import re
 from collections.abc import Iterable, Mapping
 from dataclasses import asdict, dataclass, field, replace
+from itertools import product
 from pathlib import Path
 from types import MappingProxyType
 from typing import Any
@@ -58,6 +59,7 @@
 #: exceed one; it is bounded to ``ROLLED_FORWARD_RATIO_BOUNDS`` so a
 #: mis-pinned operand cannot pass for growth.
 ROLLED_FORWARD_BY_RATIO = "rolled_forward_by_ratio"
+ALLOCATED_RESIDUAL_BY_RATIO = "allocated_residual_by_ratio"
 #: ``calendar_year_window_scaled_by_ratio``: the ``calendar_year_window`` of
 #: the reference's own series, translated by the quotient of two facts that
 #: each pin their own period and may come from another publisher: a subset's
@@ -83,6 +85,7 @@
         "count_x_mean",
         "scaled_by_ratio",
         ROLLED_FORWARD_BY_RATIO,
+        ALLOCATED_RESIDUAL_BY_RATIO,
         CALENDAR_YEAR_WINDOW_SCALED_BY_RATIO,
         MONTHLY_WINDOW_COUNT_X_MEAN,
         *MONTHLY_WINDOW_OPERATIONS,
@@ -99,6 +102,7 @@
         "count_x_mean",
         "scaled_by_ratio",
         ROLLED_FORWARD_BY_RATIO,
+        ALLOCATED_RESIDUAL_BY_RATIO,
         CALENDAR_YEAR_WINDOW_SCALED_BY_RATIO,
         MONTHLY_WINDOW_COUNT_X_MEAN,
         *MONTHLY_WINDOW_OPERATIONS,
@@ -112,6 +116,7 @@
         "linear_combination",
         "count_x_mean",
         "scaled_by_ratio",
+        ALLOCATED_RESIDUAL_BY_RATIO,
     )
 )
 
@@ -299,6 +304,8 @@ def __post_init__(self) -> None:
         if self.value_operation == ROLLED_FORWARD_BY_RATIO:
             _validate_rolled_forward_operands(self.name, self.value_operands)
             _rolled_forward_grouped_member_roster(self)
+        if self.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+            _validate_allocation_reference(self)
         if self.value_operation == "calendar_year_window":
             _validate_calendar_year_window_reference(self)
         elif self.value_operation == CALENDAR_YEAR_WINDOW_SCALED_BY_RATIO:
@@ -572,6 +579,7 @@ def from_mapping(cls, raw: Mapping[str, object]) -> LedgerTargetHierarchyRule:
 class _LedgerFactIndex:
     facts: tuple[object, ...]
     by_identifier: Mapping[str, tuple[object, ...]]
+    by_aggregate_fact_key: Mapping[str, tuple[object, ...]]
 
     def lookup(self, identifier: str) -> tuple[object, ...]:
         return self.by_identifier.get(identifier, ())
@@ -651,6 +659,8 @@ def _require_executable_reference(reference: LedgerTargetReference) -> None:
     evidence, but they are not executable selectors: in particular, resolving a
     multi-cell table through ``identity`` would either depend on accidental
     singleton input or become ambiguous as soon as the next cell arrived.
+    Rows requiring a reference profile also carry the resolver's selection
+    identity before an active status permits compilation.
     """
 
     activation_status = reference.metadata.get("activation_status", "")
@@ -662,6 +672,14 @@ def _require_executable_reference(reference: LedgerTargetReference) -> None:
             "fact reference) before compilation."
         )
 
+    if reference.metadata.get("required_reference_profile") and (
+        reference.metadata.get("reference_profiles_resolved") != "1"
+        or not reference.metadata.get("reference_selection_sha256")
+    ):
+        raise ValueError(
+            f"Ledger target reference {reference.name!r} requires reference profile resolution before compilation."
+        )
+
 
 def apply_ledger_target_profile(
     registry: TargetRegistry,
@@ -806,6 +824,10 @@ def target_spec_from_ledger_reference(
         facts = _resolve_monthly_window_count_x_mean_reference_facts(
             reference, list(facts)
         )
+    elif reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+        # Direct callers receive the same exact selector, universe and roster
+        # checks as catalog callers; a pre-resolved tuple is never trusted.
+        facts = _resolve_allocation_reference_facts(reference, facts)
     if len(facts) > 1 and reference.value_operation not in MULTI_FACT_VALUE_OPERATIONS:
         raise ValueError(
             f"Ledger target reference {reference.name!r}: multiple Ledger facts "
@@ -819,7 +841,9 @@ def target_spec_from_ledger_reference(
         else 0
     )
     for index, member in enumerate(facts):
-        if (
+        if reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+            _validate_window_ratio_operand_fact(member, reference)
+        elif (
             reference.value_operation == ROLLED_FORWARD_BY_RATIO
             and index >= len(facts) - 2
         ):
@@ -874,6 +898,8 @@ def target_spec_from_ledger_reference(
         numeric_value, value_metadata = _rolled_forward_by_ratio_value(
             reference, facts, numeric_values
         )
+    elif reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+        numeric_value, value_metadata = _allocated_residual_value(reference, facts)
     elif reference.value_operation == "linear_combination":
         weights = _linear_combination_weights(reference, facts)
         numeric_value = sum(
@@ -924,6 +950,12 @@ def target_spec_from_ledger_reference(
     identity_facts = (
         (representative_fact,)
         if reference.value_operation == "scaled_by_ratio"
+        else tuple(
+            member
+            for member in facts
+            if _fact_matches_selector(member, reference.ledger_selector)
+        )
+        if reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO
         else facts[:-2]
         if reference.value_operation == ROLLED_FORWARD_BY_RATIO
         else _window_ratio_window_facts(reference, facts)
@@ -1049,22 +1081,7 @@ def _rolled_forward_by_ratio_value(
     _assert_rolled_forward_base_cells(reference, list(facts[:-2]))
     *base_values, numerator, denominator = numeric_values
     base = math.fsum(base_values)
-    if not math.isfinite(denominator) or denominator <= 0:
-        raise ValueError(
-            f"Ledger target reference {reference.name!r}: "
-            f"{ROLLED_FORWARD_BY_RATIO} denominator {denominator!r} must be a "
-            "finite positive value."
-        )
-    ratio = numerator / denominator
-    low, high = ROLLED_FORWARD_RATIO_BOUNDS
-    if not math.isfinite(ratio) or not low < ratio <= high:
-        raise ValueError(
-            f"Ledger target reference {reference.name!r}: "
-            f"{ROLLED_FORWARD_BY_RATIO} produced ratio {ratio!r} from numerator "
-            f"{numerator!r} and denominator {denominator!r}, outside "
-            f"({low}, {high}]: a growth factor this large means an operand is "
-            "pinned to the wrong period or series."
-        )
+    ratio = _validated_growth_ratio(reference, facts[0], facts[-2], facts[-1])
     value = base * ratio
     if not math.isfinite(value) or value < 0:
         raise ValueError(
@@ -1096,6 +1113,46 @@ def _rolled_forward_by_ratio_value(
     }
 
 
+def _validated_growth_ratio(
+    reference: LedgerTargetReference,
+    base: object,
+    numerator_fact: object,
+    denominator_fact: object,
+) -> float:
+    """Validate one series at the source and target periods, then its growth."""
+
+    prefix = f"Ledger target reference {reference.name!r}: {reference.value_operation}"
+    if _rolled_forward_series_key(numerator_fact) != _rolled_forward_series_key(
+        denominator_fact
+    ):
+        raise ValueError(
+            f"{prefix} numerator and denominator are not one series at two periods."
+        )
+    if _period_key(denominator_fact) != _period_key(base):
+        raise ValueError(f"{prefix} denominator does not resolve at the base's period.")
+    if _period_key(numerator_fact) != _period_key_from_value(reference.period):
+        raise ValueError(f"{prefix} numerator does not resolve at the target period.")
+    numerator = _numeric_fact_value(numerator_fact, reference)
+    denominator = _numeric_fact_value(denominator_fact, reference)
+    if not math.isfinite(denominator) or denominator <= 0:
+        raise ValueError(
+            f"Ledger target reference {reference.name!r}: "
+            f"{reference.value_operation} denominator {denominator!r} must be a "
+            "finite positive value."
+        )
+    ratio = numerator / denominator
+    low, high = ROLLED_FORWARD_RATIO_BOUNDS
+    if not math.isfinite(ratio) or not low < ratio <= high:
+        raise ValueError(
+            f"Ledger target reference {reference.name!r}: "
+            f"{reference.value_operation} produced ratio {ratio!r} from numerator "
+            f"{numerator!r} and denominator {denominator!r}, outside "
+            f"({low}, {high}]: a growth factor this large means an operand is "
+            "pinned to the wrong period or series."
+        )
+    return ratio
+
+
 def _value_representative_fact(
     facts: tuple[object, ...],
     *,
@@ -1103,7 +1160,11 @@ def _value_representative_fact(
 ) -> object:
     if len(facts) == 1 or operation not in MULTI_FACT_VALUE_OPERATIONS:
         return facts[0]
-    if operation in {"scaled_by_ratio", ROLLED_FORWARD_BY_RATIO}:
+    if operation in {
+        "scaled_by_ratio",
+        ROLLED_FORWARD_BY_RATIO,
+        ALLOCATED_RESIDUAL_BY_RATIO,
+    }:
         return facts[0]
     return max(enumerate(facts), key=lambda item: (_period_key(item[1]), item[0]))[1]
 
@@ -1822,9 +1883,14 @@ def _unsupported(reason: str, fact: object) -> _UnsupportedFactError:
 def _ledger_fact_index(facts: Iterable[object]) -> _LedgerFactIndex:
     materialized_facts = tuple(facts)
     buckets: dict[str, list[object]] = {}
+    aggregate_buckets: dict[str, list[object]] = {}
     for fact in materialized_facts:
+        aggregate_key = _str_at(fact, "aggregate_fact_key")
+        if aggregate_key:
+            # Keep every source occurrence, including repeated Python objects.
+            aggregate_buckets.setdefault(aggregate_key, []).append(fact)
         keys = (
-            _str_at(fact, "aggregate_fact_key"),
+            aggregate_key,
             _str_at(fact, "semantic_fact_key"),
             _str_at(fact, "fact_key"),
             _str_at(fact, "legacy_fact_key"),
@@ -1837,6 +1903,9 @@ def _ledger_fact_index(facts: Iterable[object]) -> _LedgerFactIndex:
     return _LedgerFactIndex(
         facts=materialized_facts,
         by_identifier={key: tuple(value) for key, value in buckets.items()},
+        by_aggregate_fact_key={
+            key: tuple(value) for key, value in aggregate_buckets.items()
+        },
     )
 
 
@@ -1909,6 +1978,13 @@ def _resolve_reference_fact(
             return _resolve_rolled_forward_reference_facts(
                 reference, eligible_matches, fact_index.facts
             )
+        if reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+            return _resolve_allocation_reference_facts(
+                reference,
+                fact_index.facts,
+                fact_index=fact_index,
+                base_matches=matches,
+            )
         if reference.value_operation == "linear_combination" and eligible_matches:
             return _resolve_linear_combination_reference_facts(
                 reference, eligible_matches
@@ -2360,6 +2436,451 @@ def _monthly_window_count_x_mean_value(
     }
 
 
+_ALLOCATION_FIXED_PINS = (
+    "source_name",
+    "source_measure_id",
+    "source_concept",
+    "entity_name",
+    "record_set_id",
+    "period_type",
+    "period_value",
+    "geography_level",
+    "geography_id",
+    "geography_vintage",
+)
+
+
+def _validate_allocation_selector(
+    selector: Mapping[str, object], *, prefix: str, grouped: bool = False
+) -> None:
+    missing = [
+        key
+        for key in _ALLOCATION_FIXED_PINS
+        if selector.get(key) in (None, "")
+        or isinstance(selector.get(key), (Mapping, list, tuple))
+    ]
+    dimensions = selector.get("dimensions")
+    pins = selector.get("dimension_values", {})
+    if (
+        missing
+        or not isinstance(dimensions, list)
+        or len(set(dimensions)) != len(dimensions)
+        or not isinstance(pins, Mapping)
+        or set(dimensions) != set(pins)
+    ):
+        raise ValueError(
+            f"{prefix} requires complete scalar source/geography/period and dimension pins; missing {missing!r}."
+        )
+    for value in pins.values():
+        members = value if grouped and isinstance(value, list) else [value]
+        if (
+            not members
+            or any(isinstance(member, (Mapping, list, tuple)) for member in members)
+            or any(
+                _strict_scalar_equal(member, previous)
+                for index, member in enumerate(members)
+                for previous in members[:index]
+            )
+        ):
+            raise ValueError(
+                f"{prefix} requires unique typed scalar dimension members."
+            )
+
+
+def _allocation_operand_selector(operand: Mapping[str, object]) -> dict[str, object]:
+    return {str(key): value for key, value in operand.items() if key != "role"}
+
+
+def _validate_allocation_reference(reference: LedgerTargetReference) -> None:
+    prefix = f"LedgerTargetReference {reference.name!r}: {ALLOCATED_RESIDUAL_BY_RATIO}"
+    operands = reference.value_operands
+    roles = [
+        operand.get("role") if isinstance(operand, Mapping) else None
+        for operand in operands
+    ]
+    if roles not in (
+        ["base", "total", "partition"],
+        ["base", "total", "partition", "numerator", "denominator"],
+    ):
+        raise ValueError(
+            f"{prefix} requires ordered base/total/partition and optional paired numerator/denominator operands."
+        )
+    base = operands[0]
+    count = base.get("expected_member_count")
+    if (
+        set(base) != {"role", "expected_member_count"}
+        or isinstance(count, bool)
+        or not isinstance(count, int)
+        or count <= 0
+        or reference.expected_member_count not in (None, count)
+    ):
+        raise ValueError(
+            f"{prefix} base requires a positive expected_member_count and inherits the reference selector without overrides."
+        )
+    _validate_allocation_selector(
+        reference.ledger_selector, prefix=prefix, grouped=True
+    )
+    members = operands[2].get("member_selectors")
+    recipients = operands[2].get("allocation_member_keys")
+    if (
+        set(operands[2]) != {"role", "member_selectors", "allocation_member_keys"}
+        or not isinstance(members, (list, tuple))
+        or not members
+    ):
+        raise ValueError(
+            f"{prefix} partition requires explicit member_selectors and allocation_member_keys."
+        )
+    selectors = [_allocation_operand_selector(operands[1]), *members]
+    for selector in selectors:
+        if not isinstance(selector, Mapping):
+            raise ValueError(f"{prefix} member selectors must be mappings.")
+        _validate_allocation_selector(selector, prefix=prefix)
+        if (
+            not isinstance(selector.get("aggregate_fact_key"), str)
+            or not selector["aggregate_fact_key"]
+        ):
+            raise ValueError(
+                f"{prefix} total and partition selectors require aggregate_fact_key pins."
+            )
+    keys = [selector["aggregate_fact_key"] for selector in members]
+    if len(set(keys)) != len(keys) or selectors[0]["aggregate_fact_key"] in keys:
+        raise ValueError(
+            f"{prefix} partition members must be unique and exclude the total."
+        )
+    if (
+        not isinstance(recipients, (list, tuple))
+        or not recipients
+        or any(not isinstance(key, str) for key in recipients)
+        or len(set(recipients)) != len(recipients)
+        or not set(recipients) <= set(keys)
+    ):
+        raise ValueError(
+            f"{prefix} allocation_member_keys must be a nonempty unique subset of the partition."
+        )
+    # Scalar dimensions identify the atoms independently of their fact keys.
+    atomic_cells = [
+        json.dumps(selector.get("dimension_values", {}), sort_keys=True)
+        for selector in members
+    ]
+    if len(set(atomic_cells)) != len(atomic_cells):
+        raise ValueError(f"{prefix} partition has duplicate atomic cells.")
+    total = selectors[0]
+    common = set(_ALLOCATION_FIXED_PINS) - {"record_set_id"}
+    for selector in members:
+        if any(selector[key] != total[key] for key in common):
+            raise ValueError(
+                f"{prefix} total and partition must share one source count universe, geography, vintage and period."
+            )
+        total_dimensions = set(total["dimensions"])
+        atom_dimensions = set(selector["dimensions"])
+        if not total_dimensions < atom_dimensions:
+            raise ValueError(
+                f"{prefix} total must be outside the atomic partition dimensions."
+            )
+        if atom_dimensions != set(members[0]["dimensions"]) or any(
+            not _strict_scalar_equal(
+                selector["dimension_values"][dimension],
+                total["dimension_values"][dimension],
+            )
+            for dimension in total_dimensions
+        ):
+            raise ValueError(
+                f"{prefix} partition dimensions and shared total dimension values must agree."
+            )
+    for operand in operands[3:]:
+        _validate_allocation_selector(
+            _allocation_operand_selector(operand), prefix=prefix
+        )
+    _validate_allocation_base_group(reference, members)
+
+
+def _validate_allocation_base_group(
+    reference: LedgerTargetReference, members: list[Mapping[str, object]]
+) -> None:
+    """Every typed cell requested by the base must belong to the partition."""
+    selector = reference.ledger_selector
+    pins = selector.get("dimension_values", {})
+    dimensions = tuple(sorted(pins))
+    rosters = tuple(
+        pins[name] if isinstance(pins[name], list) else [pins[name]]
+        for name in dimensions
+    )
+    cell_count = math.prod(len(roster) for roster in rosters)
+    prefix = f"LedgerTargetReference {reference.name!r}: {ALLOCATED_RESIDUAL_BY_RATIO}"
+    if reference.value_operands[0]["expected_member_count"] != cell_count:
+        raise ValueError(
+            f"{prefix} base expected_member_count must equal its explicit typed roster length."
+        )
+    if cell_count > len(members):
+        raise ValueError(
+            f"{prefix} base typed roster must be an exact subset of the atomic partition."
+        )
+    for cell in product(*rosters):
+        matches = [
+            member
+            for member in members
+            if all(member[key] == selector[key] for key in _ALLOCATION_FIXED_PINS)
+            and set(member["dimensions"]) == set(dimensions)
+            and all(
+                _strict_scalar_equal(member["dimension_values"][name], value)
+                for name, value in zip(dimensions, cell, strict=True)
+            )
+        ]
+        if len(matches) != 1:
+            raise ValueError(
+                f"{prefix} base typed roster must be an exact subset of the atomic partition."
+            )
+
+
+def _allocation_auxiliary_selectors(
+    reference: LedgerTargetReference,
+) -> tuple[Mapping[str, object], ...]:
+    return (
+        _allocation_operand_selector(reference.value_operands[1]),
+        *reference.value_operands[2]["member_selectors"],
+        *(
+            _allocation_operand_selector(operand)
+            for operand in reference.value_operands[3:]
+        ),
+    )
+
+
+def _allocation_universe_key(
+    fact: object, partition_dimensions: set[str]
+) -> tuple[object, ...]:
+    # Category filters define the partition atoms, while all other filters
+    # define the count universe and must agree with the published total.
+    dimensions = _dimensions(fact)
+    constraints = [
+        row
+        for row in _constraint_rows(fact)
+        if not (
+            isinstance(row, Mapping)
+            and row.get("variable") in partition_dimensions
+            and row.get("variable") in dimensions
+            and row.get("operator") == "=="
+            and row.get("role", "filter") == "filter"
+            and _strict_scalar_equal(row.get("value"), dimensions[row["variable"]])
+        )
+    ]
+    return (
+        _domain(fact),
+        json.dumps(constraints, sort_keys=True, separators=(",", ":")),
+        _str_at(fact, "entity", "role"),
+        _str_at(fact, "source_release_key"),
+        _str_at(fact, "source", "source_sha256"),
+        _str_at(fact, "source", "vintage"),
+        json.dumps(_at(fact, "period_coverage"), sort_keys=True, separators=(",", ":")),
+    )
+
+
+def _resolve_allocation_reference_facts(
+    reference: LedgerTargetReference,
+    facts: tuple[object, ...],
+    *,
+    fact_index: _LedgerFactIndex | None = None,
+    base_matches: list[object] | None = None,
+) -> tuple[object, ...]:
+    prefix = (
+        f"Ledger target reference {reference.name!r}: {ALLOCATED_RESIDUAL_BY_RATIO}"
+    )
+    _validate_allocation_reference(reference)
+    selected = []
+    for selector in _allocation_auxiliary_selectors(reference):
+        aggregate_key = selector.get("aggregate_fact_key")
+        candidates = (
+            fact_index.by_aggregate_fact_key.get(aggregate_key, ())
+            if fact_index is not None
+            and isinstance(aggregate_key, str)
+            and aggregate_key
+            else facts
+        )
+        matches = [
+            fact for fact in candidates if _fact_matches_selector(fact, selector)
+        ]
+        if len(matches) != 1:
+            raise ValueError(
+                f"{prefix} each declared selector must resolve exactly once, got {len(matches)}."
+            )
+        selected.append(matches[0])
+    total = selected[0]
+    atoms = selected[1 : 1 + len(reference.value_operands[2]["member_selectors"])]
+    base = (
+        base_matches
+        if base_matches is not None
+        else [
+            fact
+            for fact in facts
+            if _fact_matches_selector(fact, reference.ledger_selector)
+        ]
+    )
+    keys = {_fact_key(fact) for fact in atoms}
+    if len(base) != reference.value_operands[0]["expected_member_count"] or any(
+        _fact_key(fact) not in keys for fact in base
+    ):
+        raise ValueError(
+            f"{prefix} base must be its exact declared subset of the partition."
+        )
+    dimensions = set().union(*(set(_dimensions(fact)) for fact in atoms))
+    universe = _allocation_universe_key(total, dimensions)
+    if not _str_at(total, "source_release_key") or not _str_at(
+        total, "source", "source_sha256"
+    ):
+        raise ValueError(
+            f"{prefix} requires a pinned source snapshot (source_release_key and source_sha256)."
+        )
+    if any(_allocation_universe_key(fact, dimensions) != universe for fact in atoms):
+        raise ValueError(
+            f"{prefix} total and partition disagree on their count universe or source snapshot."
+        )
+    growth = selected[1 + len(atoms) :]
+    if growth:
+        base_geography = tuple(
+            _str_at(total, "geography", key) for key in ("level", "id")
+        )
+        growth_geography = tuple(
+            _str_at(growth[0], "geography", key) for key in ("level", "id")
+        )
+        if base_geography != growth_geography and not reference.metadata.get(
+            "growth_geography_proxy"
+        ):
+            raise ValueError(
+                f"{prefix} cross-geography growth requires a declared growth_geography_proxy."
+            )
+        _validated_growth_ratio(reference, total, *growth)
+    for index, fact in enumerate(selected):
+        if index <= len(atoms):
+            _validate_resolved_reference_fact(fact, reference)
+        else:
+            _validate_window_ratio_operand_fact(fact, reference)
+        if _numeric_fact_value(fact, reference) < 0:
+            raise ValueError(f"{prefix} requires finite nonnegative counts.")
+        _validate_fact_aggregation(fact, reference)
+    base_keys = {_fact_key(fact) for fact in base}
+    labelled_facts = (
+        *sorted(base, key=_fact_key),
+        *sorted(
+            (fact for fact in atoms if _fact_key(fact) not in base_keys), key=_fact_key
+        ),
+        total,
+        *growth,
+    )
+    # A published cell may serve more than one operand role. Preserve each
+    # fact once after checking every input selector's exact cardinality.
+    return tuple({_fact_key(fact): fact for fact in labelled_facts}.values())
+
+
+def _allocated_residual_value(
+    reference: LedgerTargetReference, facts: tuple[object, ...]
+) -> tuple[float, dict[str, str]]:
+    partition = reference.value_operands[2]
+    facts_by_key = {_fact_key(fact): fact for fact in facts}
+    atoms = tuple(
+        facts_by_key[key]
+        for key in sorted(
+            selector["aggregate_fact_key"] for selector in partition["member_selectors"]
+        )
+    )
+    total = facts_by_key[reference.value_operands[1]["aggregate_fact_key"]]
+    base = [
+        fact
+        for fact in atoms
+        if _fact_matches_selector(fact, reference.ledger_selector)
+    ]
+    recipients = set(partition["allocation_member_keys"])
+    total_value = _numeric_fact_value(total, reference)
+    stated = math.fsum(_numeric_fact_value(fact, reference) for fact in atoms)
+    base_value = math.fsum(_numeric_fact_value(fact, reference) for fact in base)
+    recipient_mass = math.fsum(
+        _numeric_fact_value(fact, reference)
+        for fact in atoms
+        if _fact_key(fact) in recipients
+    )
+    recipient_base = math.fsum(
+        _numeric_fact_value(fact, reference)
+        for fact in base
+        if _fact_key(fact) in recipients
+    )
+    residual = total_value - stated
+    if not math.isfinite(residual) or residual < 0:
+        raise ValueError(
+            f"Ledger target reference {reference.name!r}: negative or nonfinite residual {residual!r} is refused."
+        )
+    if residual and not recipient_mass > 0:
+        raise ValueError(
+            f"Ledger target reference {reference.name!r}: positive residual requires positive recipient mass."
+        )
+    increment = residual * (recipient_base / recipient_mass) if residual else 0.0
+    growth = tuple(
+        next(
+            fact
+            for fact in facts
+            if _fact_matches_selector(fact, _allocation_operand_selector(operand))
+        )
+        for operand in reference.value_operands[3:]
+    )
+    ratio = _validated_growth_ratio(reference, total, *growth) if growth else 1.0
+    value = (base_value + increment) * ratio
+    if not math.isfinite(value):
+        raise ValueError(
+            f"Ledger target reference {reference.name!r}: allocation produced nonfinite value."
+        )
+    labelled_keys = {
+        "base": sorted(_fact_key(fact) for fact in base),
+        "partition": sorted(_fact_key(fact) for fact in atoms),
+        "recipients": sorted(recipients),
+        "total": _fact_key(total),
+        **(
+            {"numerator": _fact_key(growth[0]), "denominator": _fact_key(growth[1])}
+            if growth
+            else {}
+        ),
+    }
+    receipt = {
+        "operation": ALLOCATED_RESIDUAL_BY_RATIO,
+        "version": 1,
+        "ruling": reference.metadata.get("allocation_ruling", ""),
+        "selected_profile": reference.metadata.get(
+            "census_residual_allocation",
+            reference.metadata.get("residual_allocation_profile", ""),
+        ),
+        "fact_keys": labelled_keys,
+        "source_snapshot": {
+            "source_release_key": _str_at(total, "source_release_key"),
+            "source_sha256": _str_at(total, "source", "source_sha256"),
+            "source_vintage": _str_at(total, "source", "vintage"),
+        },
+        "growth_geography_proxy": reference.metadata.get("growth_geography_proxy", ""),
+        "member_digests": {
+            role: hashlib.sha256(
+                json.dumps(labelled_keys[role], separators=(",", ":")).encode()
+            ).hexdigest()
+            for role in ("base", "partition", "recipients")
+        },
+        "T": total_value,
+        "L": stated,
+        "R": residual,
+        "B": base_value,
+        "A": recipient_mass,
+        "W": recipient_base,
+        "allocated_increment": increment,
+        "N": _numeric_fact_value(growth[0], reference) if growth else None,
+        "D": _numeric_fact_value(growth[1], reference) if growth else None,
+        "Q": ratio,
+        "zero_residual": residual == 0,
+        "source_period": _comparable_period_value(total),
+        "target_period": reference.period,
+        "final_target": value,
+    }
+    return value, {
+        "ledger_allocation_receipt": json.dumps(
+            receipt, sort_keys=True, separators=(",", ":"), allow_nan=False
+        ),
+        "ledger_value_base": repr(base_value),
+        "ledger_value_ratio": repr(ratio),
+    }
+
+
 def _scaled_by_ratio_operand_selectors(
     reference: LedgerTargetReference,
 ) -> tuple[Mapping[str, object], ...]:
@@ -2464,28 +2985,7 @@ def _resolve_rolled_forward_reference_facts(
                 f"must resolve exactly once, got {len(matches)} matches."
             )
         resolved.append(matches[0])
-    numerator, denominator = resolved[-2:]
-    if _rolled_forward_series_key(numerator) != _rolled_forward_series_key(denominator):
-        raise ValueError(
-            f"Ledger target reference {reference.name!r}: "
-            f"{ROLLED_FORWARD_BY_RATIO} numerator and denominator are not one "
-            "series at two periods (source, concept, geography, entity, "
-            "dimensions and universe must match), so their ratio is not a growth."
-        )
-    if _period_key(denominator) != latest:
-        raise ValueError(
-            f"Ledger target reference {reference.name!r}: "
-            f"{ROLLED_FORWARD_BY_RATIO} denominator resolves at "
-            f"{_comparable_period_value(denominator)!r}, not the base's period "
-            f"{_comparable_period_value(base[0])!r}."
-        )
-    if _period_key(numerator) != _period_key_from_value(reference.period):
-        raise ValueError(
-            f"Ledger target reference {reference.name!r}: "
-            f"{ROLLED_FORWARD_BY_RATIO} numerator resolves at "
-            f"{_comparable_period_value(numerator)!r}, not the target period "
-            f"{reference.period!r}."
-        )
+    _validated_growth_ratio(reference, base[0], resolved[-2], resolved[-1])
     return tuple(resolved)
 
 
@@ -2666,6 +3166,8 @@ def reference_fact_selectors(
         if _rolled_forward_base_overlay(reference):
             selectors.append(_rolled_forward_base_selector(reference))
         selectors.extend(_rolled_forward_operand_selectors(reference))
+    if reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+        selectors.extend(_allocation_auxiliary_selectors(reference))
     return tuple(selectors)
 
 
@@ -4240,6 +4742,10 @@ def _reference_metadata(reference: LedgerTargetReference) -> dict[str, str]:
         metadata["ledger_value_formula"] = "minuend - subtrahend"
     if reference.value_operation == "scaled_by_ratio":
         metadata["ledger_value_formula"] = "base * numerator / denominator"
+    if reference.value_operation == ALLOCATED_RESIDUAL_BY_RATIO:
+        metadata["ledger_value_formula"] = (
+            "(base + (total - partition) * recipient_base / recipients) * growth"
+        )
     if reference.value_operation == CALENDAR_YEAR_WINDOW_SCALED_BY_RATIO:
         target_year = _calendar_year_from_reference(reference)
         metadata["ledger_value_formula"] = (
diff --git a/packages/microcosm-build/src/microcosm/build/nz/calibration_bindings.json b/packages/microcosm-build/src/microcosm/build/nz/calibration_bindings.json
index ce0f7f6c16..1f35f0e3e5 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/calibration_bindings.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/calibration_bindings.json
@@ -4,15 +4,35 @@
   "required_inputs": {
     "person": [
       "age",
-      "region_code"
+      "region_code",
+      "person_id",
+      "person_household_id"
     ],
     "household": [
       "household_region_code",
-      "tenure"
+      "tenure",
+      "household_id"
     ]
   },
+  "roster_counts": [
+    {
+      "entity": "household",
+      "name": "household_size",
+      "member_entity": "person",
+      "entity_id": "household_id",
+      "member_id": "person_id",
+      "membership": "person_household_id",
+      "representation": "Model roster represents usual-resident household membership."
+    }
+  ],
   "input_domains": {
     "person": {
+      "person_id": {
+        "kind": "identity"
+      },
+      "person_household_id": {
+        "kind": "identity"
+      },
       "age": {
         "kind": "nonnegative_integer"
       },
@@ -39,6 +59,9 @@
       }
     },
     "household": {
+      "household_id": {
+        "kind": "identity"
+      },
       "household_region_code": {
         "values": [
           "01",
@@ -1349,7 +1372,7 @@
     },
     {
       "entity": "household",
-      "name": "household_region_01_owned_indicator",
+      "name": "household_region_01_size_1_indicator",
       "predicates": [
         {
           "column": "household_region_code",
@@ -1357,18 +1380,15 @@
           "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_01_not_owned_indicator",
+      "name": "household_region_01_size_2_indicator",
       "predicates": [
         {
           "column": "household_region_code",
@@ -1376,145 +1396,116 @@
           "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_02_owned_indicator",
+      "name": "household_region_01_size_3_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "02"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_02_not_owned_indicator",
+      "name": "household_region_01_size_4_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "02"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_03_owned_indicator",
+      "name": "household_region_01_size_5_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "03"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_03_not_owned_indicator",
+      "name": "household_region_01_size_6_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "03"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_04_owned_indicator",
+      "name": "household_region_01_size_7_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "04"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_04_not_owned_indicator",
+      "name": "household_region_01_size_8_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "04"
+          "value": "01"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_05_owned_indicator",
+      "name": "household_region_01_owned_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "05"
+          "value": "01"
         },
         {
           "column": "tenure",
@@ -1528,12 +1519,12 @@
     },
     {
       "entity": "household",
-      "name": "household_region_05_not_owned_indicator",
+      "name": "household_region_01_not_owned_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "05"
+          "value": "01"
         },
         {
           "column": "tenure",
@@ -1549,172 +1540,140 @@
     },
     {
       "entity": "household",
-      "name": "household_region_06_owned_indicator",
+      "name": "household_region_02_size_1_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "06"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_06_not_owned_indicator",
+      "name": "household_region_02_size_2_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "06"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_07_owned_indicator",
+      "name": "household_region_02_size_3_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "07"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_07_not_owned_indicator",
+      "name": "household_region_02_size_4_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "07"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_08_owned_indicator",
+      "name": "household_region_02_size_5_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "08"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_08_not_owned_indicator",
+      "name": "household_region_02_size_6_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "08"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_09_owned_indicator",
+      "name": "household_region_02_size_7_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "09"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_09_not_owned_indicator",
+      "name": "household_region_02_size_8_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "09"
+          "value": "02"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_12_owned_indicator",
+      "name": "household_region_02_owned_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "12"
+          "value": "02"
         },
         {
           "column": "tenure",
@@ -1728,12 +1687,12 @@
     },
     {
       "entity": "household",
-      "name": "household_region_12_not_owned_indicator",
+      "name": "household_region_02_not_owned_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "12"
+          "value": "02"
         },
         {
           "column": "tenure",
@@ -1749,117 +1708,2013 @@
     },
     {
       "entity": "household",
-      "name": "household_region_13_owned_indicator",
+      "name": "household_region_03_size_1_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "13"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_13_not_owned_indicator",
+      "name": "household_region_03_size_2_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "13"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_14_owned_indicator",
+      "name": "household_region_03_size_3_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "14"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_14_not_owned_indicator",
+      "name": "household_region_03_size_4_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "14"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_15_owned_indicator",
+      "name": "household_region_03_size_5_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "15"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_15_not_owned_indicator",
+      "name": "household_region_03_size_6_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "15"
+          "value": "03"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_03_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "03"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_03_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "03"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_03_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "03"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_03_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "03"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
+            "rented_nonprofit_social",
+            "rented_private",
+            "rent_free"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_04_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "04"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
+            "rented_nonprofit_social",
+            "rented_private",
+            "rent_free"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_05_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "05"
+        },
+        {
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+            "owned_with_mortgage"
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+        }
+      ]
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+          "operator": "eq",
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+            "rented_private",
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+      ]
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+          "operator": "eq",
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+      ]
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+          "operator": "eq",
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+      ]
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+        }
+      ]
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+    },
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+          "operator": "eq",
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+        {
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+          "value": [
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+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
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+        }
+      ]
+    },
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+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_13_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "13"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
+            "rented_nonprofit_social",
+            "rented_private",
+            "rent_free"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_14_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "14"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
+            "rented_nonprofit_social",
+            "rented_private",
+            "rent_free"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_15_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "15"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
+            "rented_nonprofit_social",
+            "rented_private",
+            "rent_free"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "owned_outright",
+            "owned_with_mortgage"
+          ]
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_16_not_owned_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "16"
+        },
+        {
+          "column": "tenure",
+          "operator": "in",
+          "value": [
+            "rented_public_authority",
             "rented_nonprofit_social",
             "rented_private",
             "rent_free"
@@ -1869,41 +3724,129 @@
     },
     {
       "entity": "household",
-      "name": "household_region_16_owned_indicator",
+      "name": "household_region_17_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_5_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "16"
+          "value": "17"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "owned_outright",
-            "owned_with_mortgage"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
         }
       ]
     },
     {
       "entity": "household",
-      "name": "household_region_16_not_owned_indicator",
+      "name": "household_region_17_size_6_indicator",
       "predicates": [
         {
           "column": "household_region_code",
           "operator": "eq",
-          "value": "16"
+          "value": "17"
         },
         {
-          "column": "tenure",
-          "operator": "in",
-          "value": [
-            "rented_public_authority",
-            "rented_nonprofit_social",
-            "rented_private",
-            "rent_free"
-          ]
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_17_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "17"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
         }
       ]
     },
@@ -1947,6 +3890,134 @@
         }
       ]
     },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_18_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "18"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
     {
       "entity": "household",
       "name": "household_region_18_owned_indicator",
@@ -1987,6 +4058,134 @@
         }
       ]
     },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_1_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 1
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_2_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 2
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_3_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 3
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_4_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 4
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_5_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 5
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_6_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 6
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_7_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "eq",
+          "value": 7
+        }
+      ]
+    },
+    {
+      "entity": "household",
+      "name": "household_region_99_size_8_indicator",
+      "predicates": [
+        {
+          "column": "household_region_code",
+          "operator": "eq",
+          "value": "99"
+        },
+        {
+          "column": "household_size",
+          "operator": "ge",
+          "value": 8
+        }
+      ]
+    },
     {
       "entity": "household",
       "name": "household_region_99_owned_indicator",
diff --git a/packages/microcosm-build/src/microcosm/build/nz/country_package.json b/packages/microcosm-build/src/microcosm/build/nz/country_package.json
index 9f0e7c2a6b..2f1c4b8e66 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/country_package.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/country_package.json
@@ -102,6 +102,11 @@
       "kind": "legacy_json",
       "schema_id": "legacy_json"
     },
+    {
+      "path": "reference_profiles.json",
+      "kind": "legacy_json",
+      "schema_id": "legacy_json"
+    },
     {
       "path": "release_contract.json",
       "kind": "legacy_json",
diff --git a/packages/microcosm-build/src/microcosm/build/nz/gates.json b/packages/microcosm-build/src/microcosm/build/nz/gates.json
index 733fef5693..1001839816 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/gates.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/gates.json
@@ -226,7 +226,8 @@
           "S5",
           "V1",
           "V2",
-          "V3"
+          "V3",
+          "V4"
         ],
         "required_cells": [
           "income_decile_by_family_type/1/single",
@@ -313,7 +314,8 @@
           "S5",
           "V1",
           "V2",
-          "V3"
+          "V3",
+          "V4"
         ],
         "required_cells": [
           "income_decile_by_family_type/1/single",
diff --git a/packages/microcosm-build/src/microcosm/build/nz/precal_references.json b/packages/microcosm-build/src/microcosm/build/nz/precal_references.json
index bbfa1107a7..9b43f01282 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/precal_references.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/precal_references.json
@@ -1,7 +1,7 @@
 {
   "country": "nz",
   "reference_set": "precal",
-  "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. G8-r1 selector inventory; active demography and tenure use prepared columns, TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
+  "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. Size and tenure require d1886 profile resolution; demography uses prepared columns and TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
   "allowed_value_operations": [
     "identity"
   ],
diff --git a/packages/microcosm-build/src/microcosm/build/nz/reference_inventory.json b/packages/microcosm-build/src/microcosm/build/nz/reference_inventory.json
index df6a1d62ad..bc33e7a400 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/reference_inventory.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/reference_inventory.json
@@ -33,8 +33,8 @@
         "msd_veterans_pension_recipients": 1
       },
       "by_activation_status": {
-        "active": 98,
-        "requires_explained_census_household_size_universe": 136,
+        "active": 64,
+        "requires_reference_profile_resolution": 170,
         "requires_census_family_nucleus_standard": 51,
         "requires_g8r2_taxable_income_contract_intervals_and_ageing": 474,
         "requires_stratified_receipt_assignment": 12,
@@ -766,8 +766,8 @@
       "published_national_total": 1780527,
       "published_national_leaf_sum": 1780101.0,
       "deficit": 426.0,
-      "handling": "Preserve the published discrepancy; no residual category or hidden reconciliation.",
-      "activation": "Tenure leaves active; published total diagnostic only."
+      "handling": "Preserve raw published discrepancies and allocate each region's independently computed residual under d1886; national calculations remain separate diagnostics.",
+      "activation": "Requires d1886 reference-profile resolution; total is an allocation operand and never an additional fitted target."
     },
     {
       "table": "household_size",
@@ -942,8 +942,8 @@
       "published_national_total": 1780527,
       "published_national_leaf_sum": 1718802.0,
       "deficit": 61725.0,
-      "handling": "Preserve the published discrepancy; no residual category or hidden reconciliation.",
-      "activation": "parked: Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted."
+      "handling": "Preserve raw published discrepancies and allocate each region's independently computed residual under d1886; national calculations remain separate diagnostics.",
+      "activation": "Requires d1886 reference-profile resolution; total is an allocation operand and never an additional fitted target."
     },
     {
       "table": "family_type",
@@ -1027,6 +1027,12457 @@
       "activation": "parked: Stats NZ Census-family nucleus standard and deterministic roster producer are not encoded; MC7 benefit units and family labels cannot substitute for Census multiplicities."
     }
   ],
+  "modelling_convention": {
+    "ruling": "d1886",
+    "date": "2026-10-23",
+    "disclosure": "d1886 modelling convention, 23 October 2026. Microcosm allocates Census counts with unstated household size across stated size categories in proportion to their stated counts, assuming missing at random. Each region's computed residual is its independently published household total minus its stated leaves. The national size calculation is 61,725 households; regional calculations sum to 61,713. Tenure uses the same proportional convention: the national difference is 426 and regional differences sum to 429. These regional differences and allocated leaves are Microcosm calculations, not Stats NZ published residual cells or allocated estimates. The sensitivity allocates size residuals only to one- and two-person households in their stated proportions. Fractional targets are retained. Allocation precedes one application of B2 ERP growth. Region 99 remains separate and uses the disclosed national-growth proxy."
+  },
+  "regional_profile_allocations": [
+    {
+      "geography_id": "01",
+      "table": "household_size",
+      "profile": "mar",
+      "classification": "Microcosm computed regional residual and allocated outputs; not published Stats NZ cells",
+      "allocation_ruling": "d1886",
+      "total_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "count",
+        "source_concept": "stats_nz.census_2023.household_count",
+        "entity_name": "household",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "01",
+        "geography_vintage": "unstated",
+        "record_set_id": "stats_nz.census_2023.rc_01.households",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:a37ad074587526f1319c6589"
+      },
+      "leaf_selectors": [
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 1
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:d18f8d24b8efe9d3530f022c"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 2
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:34f35b61ec15506897fc7cf0"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 3
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:8a14a0757bb38a1617ae00af"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 4
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:a7ecbbdc6d00aab8ae8f71dc"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 5
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:3ff2e5c94f27c19f856b5f67"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 6
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:075dd6ccb3ae25787488b72d"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 7
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:cf25f1b1fbd632bc93b0f526"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 8
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:b06560bcb891645e4cf1320b"
+        }
+      ],
+      "published_total": 70476,
+      "raw_leaf_sum": 66261.0,
+      "computed_residual": 4215.0,
+      "recipient_codes": [
+        1,
+        2,
+        3,
+        4,
+        5,
+        6,
+        7,
+        8
+      ],
+      "allocation_policy": "proportional to stated recipient counts",
+      "allocated_counts": [
+        17891.01878933309,
+        25734.09426359397,
+        10137.286729750533,
+        8541.868610494861,
+        4416.117354099697,
+        1965.5551229229864,
+        887.0524743061529,
+        903.0066554987096
+      ],
+      "allocated_closure": 70476.0,
+      "numerator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2025,
+        "geography_level": "region",
+        "geography_id": "01",
+        "geography_vintage": "regc_2025",
+        "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:43b0df851a12e5e002e8fc39"
+      },
+      "denominator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "01",
+        "geography_vintage": "regc_2025",
+        "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:9d2b505d85f03739f05eb8a3"
+      },
+      "growth_ratio": 1.0130982367758186,
+      "growth_applications": 1,
+      "bridge": "regional ERP growth",
+      "final_closure": 71399.1113350126,
+      "expected_final_closure": 71399.1113350126,
+      "tolerance": {
+        "rel_tol": 1e-12,
+        "abs_tol": 1e-07
+      }
+    },
+    {
+      "geography_id": "01",
+      "table": "household_size",
+      "profile": "small_households",
+      "classification": "Microcosm computed regional residual and allocated outputs; not published Stats NZ cells",
+      "allocation_ruling": "d1886",
+      "total_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "count",
+        "source_concept": "stats_nz.census_2023.household_count",
+        "entity_name": "household",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "01",
+        "geography_vintage": "unstated",
+        "record_set_id": "stats_nz.census_2023.rc_01.households",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:a37ad074587526f1319c6589"
+      },
+      "leaf_selectors": [
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 1
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:d18f8d24b8efe9d3530f022c"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 2
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:34f35b61ec15506897fc7cf0"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 3
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:8a14a0757bb38a1617ae00af"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "01",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
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+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 4
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:08a18169adbfeb37fe532f76"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 5
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:3a7dbbcf0558d4f85975a792"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 6
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:a0b3520b140f3cedf2ef5488"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 7
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:fe18f884f2a047a2655fd1e5"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.household_size",
+          "dimensions": [
+            "nz_census_2023.household_size_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_size_source_label": 8
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:bf8b42666309deeb93cfa376"
+        }
+      ],
+      "published_total": 240,
+      "raw_leaf_sum": 225.0,
+      "computed_residual": 15.0,
+      "recipient_codes": [
+        1,
+        2
+      ],
+      "allocation_policy": "proportional to stated recipient counts",
+      "allocated_counts": [
+        78.79245283018868,
+        95.20754716981132,
+        24,
+        24,
+        9,
+        6,
+        3,
+        0
+      ],
+      "allocated_closure": 240.0,
+      "numerator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2025,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+      },
+      "denominator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:ebe5d8067d7730b7c178071a"
+      },
+      "growth_ratio": 1.0239807692307692,
+      "growth_applications": 1,
+      "bridge": "national-growth proxy",
+      "final_closure": 245.7553846153846,
+      "expected_final_closure": 245.7553846153846,
+      "tolerance": {
+        "rel_tol": 1e-12,
+        "abs_tol": 1e-07
+      }
+    },
+    {
+      "geography_id": "99",
+      "table": "tenure",
+      "profile": "mar",
+      "classification": "Microcosm computed regional residual and allocated outputs; not published Stats NZ cells",
+      "allocation_ruling": "d1886",
+      "total_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "count",
+        "source_concept": "stats_nz.census_2023.household_count",
+        "entity_name": "household",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "99",
+        "geography_vintage": "unstated",
+        "record_set_id": "stats_nz.census_2023.rc_99.households",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:e996f2162851829dc746f074"
+      },
+      "leaf_selectors": [
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 1
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:42da792ae5fc4c668286745a"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 2
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:970e3603aff964c44b30183c"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 3
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:3a4fd8f66a3527da24eb45f2"
+        }
+      ],
+      "published_total": 240,
+      "raw_leaf_sum": 240.0,
+      "computed_residual": 0.0,
+      "recipient_codes": [
+        1,
+        2,
+        3
+      ],
+      "allocation_policy": "proportional to stated recipient counts",
+      "allocated_counts": [
+        129,
+        93,
+        18
+      ],
+      "allocated_closure": 240.0,
+      "numerator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2025,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+      },
+      "denominator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:ebe5d8067d7730b7c178071a"
+      },
+      "growth_ratio": 1.0239807692307692,
+      "growth_applications": 1,
+      "bridge": "national-growth proxy",
+      "final_closure": 245.7553846153846,
+      "expected_final_closure": 245.7553846153846,
+      "tolerance": {
+        "rel_tol": 1e-12,
+        "abs_tol": 1e-07
+      }
+    },
+    {
+      "geography_id": "99",
+      "table": "tenure",
+      "profile": "small_households",
+      "classification": "Microcosm computed regional residual and allocated outputs; not published Stats NZ cells",
+      "allocation_ruling": "d1886",
+      "total_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "count",
+        "source_concept": "stats_nz.census_2023.household_count",
+        "entity_name": "household",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "99",
+        "geography_vintage": "unstated",
+        "record_set_id": "stats_nz.census_2023.rc_99.households",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:e996f2162851829dc746f074"
+      },
+      "leaf_selectors": [
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 1
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:42da792ae5fc4c668286745a"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 2
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:970e3603aff964c44b30183c"
+        },
+        {
+          "source_name": "stats_nz",
+          "source_measure_id": "count",
+          "source_concept": "stats_nz.census_2023.household_count",
+          "entity_name": "household",
+          "period_type": "calendar_year",
+          "period_value": 2023,
+          "geography_level": "region",
+          "geography_id": "99",
+          "geography_vintage": "unstated",
+          "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+          "dimensions": [
+            "nz_census_2023.household_tenure_source_label"
+          ],
+          "dimension_values": {
+            "nz_census_2023.household_tenure_source_label": 3
+          },
+          "aggregate_fact_key": "ledger.aggregate_fact.v2:3a4fd8f66a3527da24eb45f2"
+        }
+      ],
+      "published_total": 240,
+      "raw_leaf_sum": 240.0,
+      "computed_residual": 0.0,
+      "recipient_codes": [
+        1,
+        2,
+        3
+      ],
+      "allocation_policy": "proportional to stated recipient counts",
+      "allocated_counts": [
+        129,
+        93,
+        18
+      ],
+      "allocated_closure": 240.0,
+      "numerator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2025,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+      },
+      "denominator_selector": {
+        "source_name": "stats_nz",
+        "source_measure_id": "population",
+        "source_concept": "stats_nz.estimated_resident_population",
+        "entity_name": "person",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "country",
+        "geography_id": "NZ",
+        "geography_vintage": "current",
+        "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+        "dimensions": [],
+        "aggregate_fact_key": "ledger.aggregate_fact.v2:ebe5d8067d7730b7c178071a"
+      },
+      "growth_ratio": 1.0239807692307692,
+      "growth_applications": 1,
+      "bridge": "national-growth proxy",
+      "final_closure": 245.7553846153846,
+      "expected_final_closure": 245.7553846153846,
+      "tolerance": {
+        "rel_tol": 1e-12,
+        "abs_tol": 1e-07
+      }
+    }
+  ],
   "national_bridge_diagnostics": [
     {
       "table": "tenure",
@@ -1799,7 +14250,7 @@
     },
     {
       "id": "census_national_and_regional_totals",
-      "reason": "Diagnostic receipts only; do not select totals with leaves."
+      "reason": "Allocation operands or diagnostic receipts only; do not select totals as fitted rows with leaves."
     },
     {
       "id": "ird_taxable_income_total_row_246",
@@ -1835,11 +14286,11 @@
     },
     {
       "id": "region_99_erp",
-      "reason": "No regional ERP series exists; Census region 99 uses the explicit national-growth proxy, without residual inference."
+      "reason": "No regional ERP series exists; Census region 99 keeps its local total and computed residual, then uses the explicit national-growth proxy."
     },
     {
       "id": "qes_prefu_and_b5_ageing",
-      "reason": "G8-r2; QES/PREFU rows are absent from this pinned artifact."
+      "reason": "G8-r2; QES/PREFU rows are present in the pinned artifact but unused by this residual-allocation task."
     },
     {
       "id": "wff_tripwires",
diff --git a/packages/microcosm-build/src/microcosm/build/nz/reference_profiles.json b/packages/microcosm-build/src/microcosm/build/nz/reference_profiles.json
new file mode 100644
index 0000000000..4fe3ebf5f4
--- /dev/null
+++ b/packages/microcosm-build/src/microcosm/build/nz/reference_profiles.json
@@ -0,0 +1,70619 @@
+{
+  "schema_version": 1,
+  "dimensions": {
+    "census_residual_allocation": {
+      "default": "mar",
+      "profiles": {
+        "mar": {
+          "transformations": [
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_size_region__r01__n1"
+              ],
+              "operation": "allocated_residual_by_ratio",
+              "value_operands": [
+                {
+                  "role": "base",
+                  "expected_member_count": 1
+                },
+                {
+                  "role": "total",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "count",
+                  "source_concept": "stats_nz.census_2023.household_count",
+                  "entity_name": "household",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "region",
+                  "geography_id": "01",
+                  "geography_vintage": "unstated",
+                  "record_set_id": "stats_nz.census_2023.rc_01.households",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:a37ad074587526f1319c6589"
+                },
+                {
+                  "role": "partition",
+                  "member_selectors": [
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "01",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 1
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:d18f8d24b8efe9d3530f022c"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "01",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 2
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:34f35b61ec15506897fc7cf0"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "01",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 3
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:8a14a0757bb38a1617ae00af"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "01",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 4
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:a7ecbbdc6d00aab8ae8f71dc"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "01",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_01.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 5
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:3ff2e5c94f27c19f856b5f67"
+                    },
+                    {
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+            },
+            {
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+              "target_label": "Gisborne Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
+            {
+              "reference_names": [
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
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+                      "record_set_id": "stats_nz.census_2023.rc_06.tenure",
+                      "dimensions": [
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+              "notes": "d1886 modelling convention: missing at random proportional size and tenure allocation. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Hawke's Bay Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
+            {
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+                "stats_nz_census_households_by_tenure_region__r06__not_owned"
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+                      "dimensions": [
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+                "census_residual_allocation": "mar"
+              },
+              "notes": "d1886 modelling convention: missing at random proportional size and tenure allocation. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Hawke's Bay Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r07__owned"
+              ],
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+                },
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+                      "source_measure_id": "count",
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+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "07",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_07.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
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+                      "geography_level": "region",
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_07.tenure",
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_07.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+                {
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+                  "source_concept": "stats_nz.estimated_resident_population",
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+                  "geography_level": "region",
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+                "census_residual_allocation": "mar"
+              },
+              "notes": "d1886 modelling convention: missing at random proportional size and tenure allocation. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Taranaki Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
+            {
+              "reference_names": [
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+              ],
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+                  "entity_name": "household",
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+                  "period_value": 2023,
+                  "geography_level": "region",
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+              "target_label": "Manawatū-Whanganui Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
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+            {
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+            },
+            {
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+              "target_label": "Otago Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
+            },
+            {
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+              "notes": "d1886 modelling convention: missing at random proportional size and tenure allocation. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
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+            },
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+            },
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+              "target_label": "Marlborough Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (mar)"
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+              "target_label": "Area Outside Region households: Owned including family trust, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation (mar)"
+            },
+            {
+              "reference_names": [
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_99.tenure",
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+              "target_label": "Area Outside Region households: Not owned, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation (mar)"
+            }
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+        "small_households": {
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+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "99",
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+                      "record_set_id": "stats_nz.census_2023.rc_99.household_size",
+                      "dimensions": [
+                        "nz_census_2023.household_size_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_size_source_label": 8
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+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:bf8b42666309deeb93cfa376"
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+                  "role": "numerator",
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+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2025,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
+                  "geography_vintage": "current",
+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+                },
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+                  "role": "denominator",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "population",
+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
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+              ],
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Area Outside Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy) (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r01__owned"
+              ],
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+                },
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+                      "source_measure_id": "count",
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+                      "record_set_id": "stats_nz.census_2023.rc_01.tenure",
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+                        "nz_census_2023.household_tenure_source_label"
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+                    "ledger.aggregate_fact.v2:b0c2adb465a6427b71d70e9d"
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+                  "geography_id": "01",
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+                  "entity_name": "person",
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+              ],
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+                "census_residual_allocation": "small_households"
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Northland Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r01__not_owned"
+              ],
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+                },
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+                      "dimensions": [
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+                      ],
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+                      },
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+                      "record_set_id": "stats_nz.census_2023.rc_01.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
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+                      "record_set_id": "stats_nz.census_2023.rc_01.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Northland Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r02__owned"
+              ],
+              "operation": "allocated_residual_by_ratio",
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+                  "period_value": 2023,
+                  "geography_level": "region",
+                  "geography_id": "02",
+                  "geography_vintage": "unstated",
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+                },
+                {
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+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
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+                      "geography_vintage": "unstated",
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
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+                      "record_set_id": "stats_nz.census_2023.rc_02.tenure",
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+                      "record_set_id": "stats_nz.census_2023.rc_02.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+              ],
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+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Auckland households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
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+                  "record_set_id": "stats_nz.census_2023.rc_02.households",
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+                {
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_02.tenure",
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+                        "nz_census_2023.household_tenure_source_label"
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+                  "source_measure_id": "population",
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+                  "entity_name": "person",
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+              ],
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Auckland households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r03__owned"
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Waikato Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r03__not_owned"
+              ],
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+                      "dimensions": [
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+                      ],
+                      "dimension_values": {
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+                      },
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Waikato Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r04__owned"
+              ],
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_04.tenure",
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+              "target_label": "Bay of Plenty Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
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+                {
+                  "role": "denominator",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "population",
+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "region",
+                  "geography_id": "04",
+                  "geography_vintage": "regc_2025",
+                  "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
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+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:3e06c55cd39b65be4bda85e8"
+                }
+              ],
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+                "allocation_ruling": "d1886",
+                "census_residual_allocation": "small_households"
+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Bay of Plenty Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r05__owned"
+              ],
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+                  "role": "base",
+                  "expected_member_count": 2
+                },
+                {
+                  "role": "total",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "count",
+                  "source_concept": "stats_nz.census_2023.household_count",
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+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "region",
+                  "geography_id": "05",
+                  "geography_vintage": "unstated",
+                  "record_set_id": "stats_nz.census_2023.rc_05.households",
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+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:dbfb8d88182af74adf0cff24"
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+                {
+                  "role": "partition",
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+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
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+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_05.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:630b30706c29f7a77dec1aa8"
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+                      "source_concept": "stats_nz.census_2023.household_count",
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+                      "geography_id": "05",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_05.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
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+                    },
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_tenure_source_label": 3
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:ed5a27847a25362ee1b4f0f1"
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+                    "ledger.aggregate_fact.v2:270efa991e56358b9abc7c55",
+                    "ledger.aggregate_fact.v2:ed5a27847a25362ee1b4f0f1"
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+                },
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+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+                {
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+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
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+                  "geography_level": "region",
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+              ],
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+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Gisborne Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r05__not_owned"
+              ],
+              "operation": "allocated_residual_by_ratio",
+              "value_operands": [
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+                },
+                {
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+                      "source_measure_id": "count",
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+                      "period_type": "calendar_year",
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+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_05.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:630b30706c29f7a77dec1aa8"
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+                      "geography_id": "05",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_05.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:270efa991e56358b9abc7c55"
+                    },
+                    {
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+                      "geography_id": "05",
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+                      "record_set_id": "stats_nz.census_2023.rc_05.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
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+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Gisborne Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r06__owned"
+              ],
+              "operation": "allocated_residual_by_ratio",
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+                },
+                {
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+                  "geography_level": "region",
+                  "geography_id": "06",
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+                  "record_set_id": "stats_nz.census_2023.rc_06.households",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:ca83e6d0fa86f98ce9639758"
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+                {
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+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
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+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "06",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_06.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                      },
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+                      "dimensions": [
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+                      "record_set_id": "stats_nz.census_2023.rc_06.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+                    "ledger.aggregate_fact.v2:d9cc9a464b7b06c956acd7d5"
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+                  "geography_level": "region",
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+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+                {
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+                  "source_concept": "stats_nz.estimated_resident_population",
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+              ],
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+                "census_residual_allocation": "small_households"
+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Hawke's Bay Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r06__not_owned"
+              ],
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+                  "geography_level": "region",
+                  "geography_id": "06",
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+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:ca83e6d0fa86f98ce9639758"
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+                {
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+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
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+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Hawke's Bay Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r07__owned"
+              ],
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+                },
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+                      "source_name": "stats_nz",
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+                      "period_value": 2023,
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+                      "geography_vintage": "unstated",
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+                        "nz_census_2023.household_tenure_source_label"
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+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Taranaki Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r07__not_owned"
+              ],
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+                      "record_set_id": "stats_nz.census_2023.rc_07.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+                      "record_set_id": "stats_nz.census_2023.rc_07.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
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+                      },
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
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+              "target_label": "Taranaki Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r08__owned"
+              ],
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Manawatū-Whanganui Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r08__not_owned"
+              ],
+              "operation": "allocated_residual_by_ratio",
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+                  "geography_level": "region",
+                  "geography_id": "08",
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+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
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+                      "record_set_id": "stats_nz.census_2023.rc_08.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
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+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
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+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:ee0b65c46a71fd21b5be13c0"
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+                  "source_name": "stats_nz",
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+                "census_residual_allocation": "small_households"
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+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Manawatū-Whanganui Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
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+              ],
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+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2025,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
+                  "geography_vintage": "current",
+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+                },
+                {
+                  "role": "denominator",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "population",
+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
+                  "geography_vintage": "current",
+                  "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:ebe5d8067d7730b7c178071a"
+                }
+              ],
+              "metadata": {
+                "allocation_ruling": "d1886",
+                "census_residual_allocation": "small_households"
+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Area Outside Region households: Owned including family trust, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation (small_households)"
+            },
+            {
+              "reference_names": [
+                "stats_nz_census_households_by_tenure_region__r99__not_owned"
+              ],
+              "operation": "allocated_residual_by_ratio",
+              "value_operands": [
+                {
+                  "role": "base",
+                  "expected_member_count": 1
+                },
+                {
+                  "role": "total",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "count",
+                  "source_concept": "stats_nz.census_2023.household_count",
+                  "entity_name": "household",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "region",
+                  "geography_id": "99",
+                  "geography_vintage": "unstated",
+                  "record_set_id": "stats_nz.census_2023.rc_99.households",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:e996f2162851829dc746f074"
+                },
+                {
+                  "role": "partition",
+                  "member_selectors": [
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "99",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_tenure_source_label": 1
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:42da792ae5fc4c668286745a"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "99",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_tenure_source_label": 2
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:970e3603aff964c44b30183c"
+                    },
+                    {
+                      "source_name": "stats_nz",
+                      "source_measure_id": "count",
+                      "source_concept": "stats_nz.census_2023.household_count",
+                      "entity_name": "household",
+                      "period_type": "calendar_year",
+                      "period_value": 2023,
+                      "geography_level": "region",
+                      "geography_id": "99",
+                      "geography_vintage": "unstated",
+                      "record_set_id": "stats_nz.census_2023.rc_99.tenure",
+                      "dimensions": [
+                        "nz_census_2023.household_tenure_source_label"
+                      ],
+                      "dimension_values": {
+                        "nz_census_2023.household_tenure_source_label": 3
+                      },
+                      "aggregate_fact_key": "ledger.aggregate_fact.v2:3a4fd8f66a3527da24eb45f2"
+                    }
+                  ],
+                  "allocation_member_keys": [
+                    "ledger.aggregate_fact.v2:42da792ae5fc4c668286745a",
+                    "ledger.aggregate_fact.v2:970e3603aff964c44b30183c",
+                    "ledger.aggregate_fact.v2:3a4fd8f66a3527da24eb45f2"
+                  ]
+                },
+                {
+                  "role": "numerator",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "population",
+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2025,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
+                  "geography_vintage": "current",
+                  "record_set_id": "stats_nz.cy2025.subnational_population.all_ages",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:b1ba314a94795074129a560a"
+                },
+                {
+                  "role": "denominator",
+                  "source_name": "stats_nz",
+                  "source_measure_id": "population",
+                  "source_concept": "stats_nz.estimated_resident_population",
+                  "entity_name": "person",
+                  "period_type": "calendar_year",
+                  "period_value": 2023,
+                  "geography_level": "country",
+                  "geography_id": "NZ",
+                  "geography_vintage": "current",
+                  "record_set_id": "stats_nz.cy2023.subnational_population.all_ages",
+                  "dimensions": [],
+                  "aggregate_fact_key": "ledger.aggregate_fact.v2:ebe5d8067d7730b7c178071a"
+                }
+              ],
+              "metadata": {
+                "allocation_ruling": "d1886",
+                "census_residual_allocation": "small_households"
+              },
+              "notes": "d1886 modelling convention: size residual only to one- and two-person households; tenure remains proportional. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+              "target_label": "Area Outside Region households: Not owned, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation (small_households)"
+            }
+          ]
+        }
+      }
+    },
+    "aging_index": {
+      "default": "central",
+      "profiles": {
+        "central": {
+          "transformations": [],
+          "deferred": true
+        },
+        "low": {
+          "available": false,
+          "transformations": []
+        },
+        "high": {
+          "available": false,
+          "transformations": []
+        }
+      }
+    }
+  }
+}
diff --git a/packages/microcosm-build/src/microcosm/build/nz/reporting_classifiers.json b/packages/microcosm-build/src/microcosm/build/nz/reporting_classifiers.json
index eb5e7411c7..d476797ada 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/reporting_classifiers.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/reporting_classifiers.json
@@ -177,7 +177,8 @@
       "S5",
       "V1",
       "V2",
-      "V3"
+      "V3",
+      "V4"
     ],
     "join_column": "family_id",
     "variant_rule": "carry_baseline_cell_by_unit_id",
diff --git a/packages/microcosm-build/src/microcosm/build/nz/scenarios.json b/packages/microcosm-build/src/microcosm/build/nz/scenarios.json
index 8a819e9923..792bb14e53 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/scenarios.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/scenarios.json
@@ -2,7 +2,7 @@
   "version": 1,
   "country": "nz",
   "method_card_row": "MC3",
-  "description": "The declared Accommodation Supplement scenario set (method card amendment MC3a): entitlement-tier scenarios S0-S5 branch from the shared AS version after calibration; calibration-tier variants V1-V3 branch before calibration and re-run it. Each non-central scenario changes exactly one knob from the central defaults. Bands are the minimum, S0 and the maximum of each gap table across every scenario, and each band bound names the scenario that set it.",
+  "description": "The declared Accommodation Supplement scenario set (method card amendment MC3a): entitlement-tier scenarios S0-S5 branch from the shared AS version after calibration; calibration-tier variants V1-V4 branch before calibration and re-run it. Each non-central scenario changes exactly one knob from the central defaults. Bands are the minimum, S0 and the maximum of each gap table across every scenario, and each band bound names the scenario that set it.",
   "status": "awaiting D1 (MC3a, MC8-MC12); S4's factor awaits Chronicle evidence",
   "tiers": {
     "entitlement": {
@@ -19,7 +19,8 @@
     "rent_stock_factor": 1.0,
     "superannuitant_treatment": "exclude_and_count",
     "aging_index": "central",
-    "beneficiary_assignment": "central"
+    "beneficiary_assignment": "central",
+    "census_residual_allocation": "mar"
   },
   "knob_domains": {
     "rent_allocation": [
@@ -47,6 +48,10 @@
     "beneficiary_assignment": [
       "central",
       "variant"
+    ],
+    "census_residual_allocation": [
+      "mar",
+      "small_households"
     ]
   },
   "knob_method_card_rows": {
@@ -56,7 +61,8 @@
     "rent_stock_factor": "MC8",
     "superannuitant_treatment": "MC11",
     "aging_index": "MC5",
-    "beneficiary_assignment": "MC6"
+    "beneficiary_assignment": "MC6",
+    "census_residual_allocation": "MC5"
   },
   "scenarios": [
     {
@@ -144,6 +150,15 @@
         "beneficiary_assignment": "variant"
       },
       "description": "beneficiary assignment variant for the main-benefit and NZ Super receipt layer"
+    },
+    {
+      "id": "V4",
+      "tier": "calibration",
+      "method_card_row": "MC5",
+      "knobs": {
+        "census_residual_allocation": "small_households"
+      },
+      "description": "d1886: allocate each region's Census size residual only to one- and two-person households in their stated proportions; tenure remains proportionally allocated"
     }
   ],
   "gap_conventions": {
@@ -170,11 +185,27 @@
           "axes": [
             {
               "column": "income_decile",
-              "values": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+              "values": [
+                1,
+                2,
+                3,
+                4,
+                5,
+                6,
+                7,
+                8,
+                9,
+                10
+              ]
             },
             {
               "column": "family_type",
-              "values": ["single", "couple", "sole_parent", "couple_with_children"]
+              "values": [
+                "single",
+                "couple",
+                "sole_parent",
+                "couple_with_children"
+              ]
             }
           ]
         },
@@ -183,7 +214,11 @@
           "axes": [
             {
               "column": "receipt_group",
-              "values": ["beneficiary", "superannuitant", "other"]
+              "values": [
+                "beneficiary",
+                "superannuitant",
+                "other"
+              ]
             }
           ]
         }
diff --git a/packages/microcosm-build/src/microcosm/build/nz/target_references.json b/packages/microcosm-build/src/microcosm/build/nz/target_references.json
index f321323e56..bbe44aee98 100644
--- a/packages/microcosm-build/src/microcosm/build/nz/target_references.json
+++ b/packages/microcosm-build/src/microcosm/build/nz/target_references.json
@@ -1,10 +1,11 @@
 {
   "country": "nz",
   "reference_set": "calibration",
-  "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. G8-r1 selector inventory; active demography and tenure use prepared columns, TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
+  "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. Size and tenure require d1886 profile resolution; demography uses prepared columns and TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
   "allowed_value_operations": [
     "identity",
-    "rolled_forward_by_ratio"
+    "rolled_forward_by_ratio",
+    "allocated_residual_by_ratio"
   ],
   "target_references": [
     {
@@ -3299,7 +3300,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3307,7 +3308,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3317,7 +3318,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3329,10 +3331,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3399,7 +3401,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3407,7 +3409,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3417,7 +3419,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3429,10 +3432,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3499,7 +3502,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3507,7 +3510,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3517,7 +3520,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3529,10 +3533,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3599,7 +3603,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3607,7 +3611,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3617,7 +3621,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3629,10 +3634,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3699,7 +3704,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3707,7 +3712,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3717,7 +3722,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3729,10 +3735,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3799,7 +3805,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3807,7 +3813,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3817,7 +3823,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3829,10 +3836,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3899,7 +3906,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -3907,7 +3914,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -3917,7 +3924,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -3929,10 +3937,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -3999,7 +4007,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4007,7 +4015,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4017,7 +4025,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4029,10 +4038,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Northland Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4099,7 +4108,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4107,7 +4116,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4117,7 +4126,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4129,10 +4139,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4199,7 +4209,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4207,7 +4217,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4217,7 +4227,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4229,10 +4240,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4299,7 +4310,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4307,7 +4318,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4317,7 +4328,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4329,10 +4341,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4399,7 +4411,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4407,7 +4419,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4417,7 +4429,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4429,10 +4442,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4499,7 +4512,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4507,7 +4520,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4517,7 +4530,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4529,10 +4543,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4599,7 +4613,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4607,7 +4621,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4617,7 +4631,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4629,10 +4644,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4699,7 +4714,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4707,7 +4722,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4717,7 +4732,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4729,10 +4745,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4799,7 +4815,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4807,7 +4823,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4817,7 +4833,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4829,10 +4846,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Auckland Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4899,7 +4916,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -4907,7 +4924,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -4917,7 +4934,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -4929,10 +4947,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -4999,7 +5017,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5007,7 +5025,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5017,7 +5035,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5029,10 +5048,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5099,7 +5118,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5107,7 +5126,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5117,7 +5136,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5129,10 +5149,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5199,7 +5219,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5207,7 +5227,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5217,7 +5237,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5229,10 +5250,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5299,7 +5320,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5307,7 +5328,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5317,7 +5338,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5329,10 +5351,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5399,7 +5421,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5407,7 +5429,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5417,7 +5439,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5429,10 +5452,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5499,7 +5522,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5507,7 +5530,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5517,7 +5540,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5529,10 +5553,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5599,7 +5623,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5607,7 +5631,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5617,7 +5641,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5629,10 +5654,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Waikato Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5699,7 +5724,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5707,7 +5732,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5717,7 +5742,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5729,10 +5755,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5799,7 +5825,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5807,7 +5833,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5817,7 +5843,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5829,10 +5856,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5899,7 +5926,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -5907,7 +5934,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -5917,7 +5944,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -5929,10 +5957,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -5999,7 +6027,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6007,7 +6035,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6017,7 +6045,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6029,10 +6058,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6099,7 +6128,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6107,7 +6136,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6117,7 +6146,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6129,10 +6159,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6199,7 +6229,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6207,7 +6237,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6217,7 +6247,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6229,10 +6260,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6299,7 +6330,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6307,7 +6338,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6317,7 +6348,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6329,10 +6361,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6399,7 +6431,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6407,7 +6439,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6417,7 +6449,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6429,10 +6462,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Bay of Plenty Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6499,7 +6532,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6507,7 +6540,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6517,7 +6550,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6529,10 +6563,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6599,7 +6633,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6607,7 +6641,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6617,7 +6651,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6629,10 +6664,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6699,7 +6734,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6707,7 +6742,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6717,7 +6752,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6729,10 +6765,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6799,7 +6835,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6807,7 +6843,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6817,7 +6853,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6829,10 +6866,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6899,7 +6936,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -6907,7 +6944,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -6917,7 +6954,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -6929,10 +6967,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -6999,7 +7037,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7007,7 +7045,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7017,7 +7055,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7029,10 +7068,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7099,7 +7138,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7107,7 +7146,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7117,7 +7156,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7129,10 +7169,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7199,7 +7239,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7207,7 +7247,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7217,7 +7257,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7229,10 +7270,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Gisborne Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7299,7 +7340,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7307,7 +7348,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7317,7 +7358,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7329,10 +7371,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7399,7 +7441,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7407,7 +7449,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7417,7 +7459,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7429,10 +7472,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7499,7 +7542,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7507,7 +7550,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7517,7 +7560,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7529,10 +7573,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7599,7 +7643,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7607,7 +7651,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7617,7 +7661,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7629,10 +7674,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7699,7 +7744,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7707,7 +7752,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7717,7 +7762,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7729,10 +7775,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7799,7 +7845,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7807,7 +7853,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7817,7 +7863,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7829,10 +7876,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7899,7 +7946,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -7907,7 +7954,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -7917,7 +7964,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -7929,10 +7977,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -7999,7 +8047,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8007,7 +8055,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8017,7 +8065,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8029,10 +8078,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Hawke's Bay Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8099,7 +8148,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8107,7 +8156,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8117,7 +8166,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8129,10 +8179,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8199,7 +8249,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8207,7 +8257,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8217,7 +8267,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8229,10 +8280,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8299,7 +8350,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8307,7 +8358,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8317,7 +8368,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8329,10 +8381,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8399,7 +8451,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8407,7 +8459,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8417,7 +8469,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8429,10 +8482,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8499,7 +8552,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8507,7 +8560,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8517,7 +8570,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8529,10 +8583,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8599,7 +8653,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8607,7 +8661,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8617,7 +8671,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8629,10 +8684,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8699,7 +8754,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8707,7 +8762,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8717,7 +8772,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8729,10 +8785,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8799,7 +8855,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8807,7 +8863,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8817,7 +8873,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8829,10 +8886,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Taranaki Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8899,7 +8956,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -8907,7 +8964,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -8917,7 +8974,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -8929,10 +8987,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -8999,7 +9057,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9007,7 +9065,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9017,7 +9075,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9029,10 +9088,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9099,7 +9158,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9107,7 +9166,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9117,7 +9176,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9129,10 +9189,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9199,7 +9259,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9207,7 +9267,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9217,7 +9277,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9229,10 +9290,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9299,7 +9360,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9307,7 +9368,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9317,7 +9378,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9329,10 +9391,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9399,7 +9461,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9407,7 +9469,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9417,7 +9479,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9429,10 +9492,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9499,7 +9562,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9507,7 +9570,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9517,7 +9580,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9529,10 +9593,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9599,7 +9663,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9607,7 +9671,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9617,7 +9681,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9629,10 +9694,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Manawatū-Whanganui Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9699,7 +9764,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9707,7 +9772,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9717,7 +9782,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9729,10 +9795,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9799,7 +9865,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9807,7 +9873,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9817,7 +9883,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9829,10 +9896,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9899,7 +9966,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -9907,7 +9974,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -9917,7 +9984,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -9929,10 +9997,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -9999,7 +10067,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10007,7 +10075,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10017,7 +10085,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10029,10 +10098,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10099,7 +10168,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10107,7 +10176,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10117,7 +10186,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10129,10 +10199,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10199,7 +10269,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10207,7 +10277,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10217,7 +10287,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10229,10 +10300,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10299,7 +10370,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10307,7 +10378,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10317,7 +10388,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10329,10 +10401,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10399,7 +10471,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10407,7 +10479,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10417,7 +10489,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10429,10 +10502,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Wellington Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10499,7 +10572,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10507,7 +10580,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10517,7 +10590,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10529,10 +10603,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10599,7 +10673,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10607,7 +10681,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10617,7 +10691,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10629,10 +10704,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10699,7 +10774,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10707,7 +10782,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10717,7 +10792,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10729,10 +10805,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10799,7 +10875,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10807,7 +10883,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10817,7 +10893,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10829,10 +10906,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10899,7 +10976,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -10907,7 +10984,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -10917,7 +10994,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -10929,10 +11007,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -10999,7 +11077,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11007,7 +11085,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11017,7 +11095,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11029,10 +11108,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11099,7 +11178,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11107,7 +11186,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11117,7 +11196,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11129,10 +11209,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11199,7 +11279,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11207,7 +11287,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11217,7 +11297,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11229,10 +11310,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "West Coast Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11299,7 +11380,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11307,7 +11388,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11317,7 +11398,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11329,10 +11411,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11399,7 +11481,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11407,7 +11489,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11417,7 +11499,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11429,10 +11512,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11499,7 +11582,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11507,7 +11590,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11517,7 +11600,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11529,10 +11613,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11599,7 +11683,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11607,7 +11691,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11617,7 +11701,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11629,10 +11714,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11699,7 +11784,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11707,7 +11792,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11717,7 +11802,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11729,10 +11815,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11799,7 +11885,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11807,7 +11893,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11817,7 +11903,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11829,10 +11916,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11899,7 +11986,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -11907,7 +11994,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -11917,7 +12004,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -11929,10 +12017,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -11999,7 +12087,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12007,7 +12095,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12017,7 +12105,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12029,10 +12118,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Canterbury Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12099,7 +12188,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12107,7 +12196,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12117,7 +12206,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12129,10 +12219,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12199,7 +12289,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12207,7 +12297,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12217,7 +12307,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12229,10 +12320,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12299,7 +12390,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12307,7 +12398,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12317,7 +12408,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12329,10 +12421,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12399,7 +12491,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12407,7 +12499,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12417,7 +12509,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12429,10 +12522,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12499,7 +12592,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12507,7 +12600,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12517,7 +12610,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12529,10 +12623,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12599,7 +12693,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12607,7 +12701,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12617,7 +12711,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12629,10 +12724,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12699,7 +12794,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12707,7 +12802,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12717,7 +12812,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12729,10 +12825,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12799,7 +12895,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12807,7 +12903,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12817,7 +12913,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12829,10 +12926,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Otago Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12899,7 +12996,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -12907,7 +13004,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -12917,7 +13014,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -12929,10 +13027,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -12999,7 +13097,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13007,7 +13105,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13017,7 +13115,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13029,10 +13128,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13099,7 +13198,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13107,7 +13206,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13117,7 +13216,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13129,10 +13229,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13199,7 +13299,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13207,7 +13307,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13217,7 +13317,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13229,10 +13330,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13299,7 +13400,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13307,7 +13408,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13317,7 +13418,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13329,10 +13431,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13399,7 +13501,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13407,7 +13509,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13417,7 +13519,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13429,10 +13532,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13499,7 +13602,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13507,7 +13610,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13517,7 +13620,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13529,10 +13633,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13599,7 +13703,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13607,7 +13711,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13617,7 +13721,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13629,10 +13734,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Southland Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13699,7 +13804,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13707,7 +13812,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13717,7 +13822,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13729,10 +13835,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13799,7 +13905,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13807,7 +13913,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13817,7 +13923,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13829,10 +13936,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13899,7 +14006,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -13907,7 +14014,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -13917,7 +14024,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -13929,10 +14037,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -13999,7 +14107,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14007,7 +14115,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14017,7 +14125,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14029,10 +14138,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14099,7 +14208,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14107,7 +14216,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14117,7 +14226,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14129,10 +14239,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14199,7 +14309,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14207,7 +14317,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14217,7 +14327,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14229,10 +14340,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14299,7 +14410,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14307,7 +14418,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14317,7 +14428,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14329,10 +14441,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14399,7 +14511,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14407,7 +14519,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14417,7 +14529,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14429,10 +14542,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Tasman Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14499,7 +14612,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14507,7 +14620,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14517,7 +14630,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14529,10 +14643,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14599,7 +14713,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14607,7 +14721,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14617,7 +14731,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14629,10 +14744,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14699,7 +14814,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14707,7 +14822,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14717,7 +14832,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14729,10 +14845,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14799,7 +14915,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14807,7 +14923,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14817,7 +14933,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14829,10 +14946,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14899,7 +15016,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -14907,7 +15024,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -14917,7 +15034,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -14929,10 +15047,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -14999,7 +15117,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15007,7 +15125,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15017,7 +15135,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15029,10 +15148,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15099,7 +15218,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15107,7 +15226,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15117,7 +15236,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15129,10 +15249,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15199,7 +15319,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15207,7 +15327,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15217,7 +15337,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15229,10 +15350,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Nelson Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15299,7 +15420,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15307,7 +15428,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15317,7 +15438,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15329,10 +15451,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15399,7 +15521,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15407,7 +15529,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15417,7 +15539,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15429,10 +15552,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15499,7 +15622,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15507,7 +15630,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15517,7 +15640,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15529,10 +15653,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15599,7 +15723,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15607,7 +15731,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15617,7 +15741,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15629,10 +15754,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15699,7 +15824,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15707,7 +15832,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15717,7 +15842,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15729,10 +15855,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15799,7 +15925,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15807,7 +15933,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15817,7 +15943,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15829,10 +15956,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15899,7 +16026,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -15907,7 +16034,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -15917,7 +16044,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -15929,10 +16057,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -15999,7 +16127,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16007,7 +16135,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16017,7 +16145,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -16029,10 +16158,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Marlborough Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16099,7 +16228,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16107,7 +16236,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16117,7 +16246,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16129,10 +16260,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 1, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 1, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_1_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16199,7 +16330,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16207,7 +16338,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16217,7 +16348,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16229,10 +16362,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 2, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 2, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_2_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16299,7 +16432,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16307,7 +16440,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16317,7 +16450,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16329,10 +16464,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 3, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 3, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_3_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16399,7 +16534,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16407,7 +16542,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16417,7 +16552,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16429,10 +16566,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 4, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 4, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_4_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16499,7 +16636,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16507,7 +16644,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16517,7 +16654,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16529,10 +16668,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 5, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 5, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_5_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16599,7 +16738,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16607,7 +16746,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16617,7 +16756,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16629,10 +16770,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 6, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 6, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_6_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16699,7 +16840,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16707,7 +16848,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16717,7 +16858,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16729,10 +16872,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 7, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 7, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_7_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -16799,7 +16942,7 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_size_region",
-        "activation_status": "requires_explained_census_household_size_universe",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
@@ -16807,7 +16950,7 @@
         "reference_set": "calibration",
         "method_card_row": "MC5",
         "legacy_contract_target_id": "stats_nz_census_households_by_composition",
-        "parking_reason": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -16817,7 +16960,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -16829,10 +16974,10 @@
           "label": "Household Structure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region Census household size 8, ERP-density bridge to June 2025"
+        "target_label": "Area Outside Region Census household size 8, ERP-density bridge to June 2025; d1886 profile-resolved allocation (national-growth proxy)"
       },
       "filter": "household_region_99_size_8_indicator",
-      "notes": "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted.",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22001,13 +22146,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22017,7 +22163,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22029,9 +22176,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Northland Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22099,13 +22247,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22115,7 +22264,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22127,9 +22277,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Northland Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Northland Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_01_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22198,13 +22349,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22214,7 +22366,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22226,9 +22379,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Auckland households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22296,13 +22450,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22312,7 +22467,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22324,9 +22480,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Auckland households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Auckland households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_02_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22395,13 +22552,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22411,7 +22569,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22423,9 +22582,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Waikato Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22493,13 +22653,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22509,7 +22670,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22521,9 +22683,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Waikato Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Waikato Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_03_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22592,13 +22755,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22608,7 +22772,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22620,9 +22785,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Bay of Plenty Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22690,13 +22856,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22706,7 +22873,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22718,9 +22886,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Bay of Plenty Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Bay of Plenty Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_04_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22789,13 +22958,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22805,7 +22975,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22817,9 +22988,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Gisborne Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22887,13 +23059,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -22903,7 +23076,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -22915,9 +23089,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Gisborne Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Gisborne Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_05_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -22986,13 +23161,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23002,7 +23178,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23014,9 +23191,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Hawke's Bay Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23084,13 +23262,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23100,7 +23279,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23112,9 +23292,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Hawke's Bay Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Hawke's Bay Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_06_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23183,13 +23364,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23199,7 +23381,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23211,9 +23394,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Taranaki Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23281,13 +23465,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23297,7 +23482,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23309,9 +23495,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Taranaki Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Taranaki Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_07_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23380,13 +23567,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23396,7 +23584,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23408,9 +23597,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Manawatū-Whanganui Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23478,13 +23668,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23494,7 +23685,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23506,9 +23698,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Manawatū-Whanganui Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Manawatū-Whanganui Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_08_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23577,13 +23770,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23593,7 +23787,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23605,9 +23800,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Wellington Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23675,13 +23871,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23691,7 +23888,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23703,9 +23901,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Wellington Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Wellington Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_09_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23774,13 +23973,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23790,7 +23990,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23802,9 +24003,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "West Coast Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23872,13 +24074,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23888,7 +24091,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23900,9 +24104,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "West Coast Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "West Coast Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_12_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -23971,13 +24176,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -23987,7 +24193,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -23999,9 +24206,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Canterbury Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24069,13 +24277,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24085,7 +24294,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24097,9 +24307,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Canterbury Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Canterbury Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_13_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24168,13 +24379,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24184,7 +24396,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24196,9 +24409,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Otago Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24266,13 +24480,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24282,7 +24497,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24294,9 +24510,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Otago Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Otago Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_14_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24365,13 +24582,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24381,7 +24599,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24393,9 +24612,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Southland Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24463,13 +24683,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24479,7 +24700,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24491,9 +24713,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Southland Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Southland Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_15_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24562,13 +24785,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24578,7 +24802,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24590,9 +24815,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Tasman Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24660,13 +24886,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24676,7 +24903,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24688,9 +24916,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Tasman Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Tasman Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_16_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24759,13 +24988,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24775,7 +25005,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24787,9 +25018,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Nelson Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24857,13 +25089,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24873,7 +25106,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24885,9 +25119,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Nelson Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Nelson Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_17_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -24956,13 +25191,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -24972,7 +25208,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -24984,9 +25221,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region households: Owned including family trust, June 2025 ERP-density bridge"
+        "target_label": "Marlborough Region households: Owned including family trust, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -25054,13 +25292,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -25070,7 +25309,8 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation"
       },
       "hierarchy": {
         "provider": {
@@ -25082,9 +25322,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Marlborough Region households: Not owned, June 2025 ERP-density bridge"
+        "target_label": "Marlborough Region households: Not owned, June 2025 ERP-density bridge; d1886 profile-resolved allocation"
       },
       "filter": "household_region_18_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -25153,13 +25394,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -25169,7 +25411,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -25181,9 +25425,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region households: Owned including family trust, June 2025 ERP-density bridge (national-growth proxy)"
+        "target_label": "Area Outside Region households: Owned including family trust, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation"
       },
       "filter": "household_region_99_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
@@ -25251,13 +25496,14 @@
       "assertion_policy": "observed_only",
       "metadata": {
         "contract_target_id": "stats_nz_census_households_by_tenure_region",
-        "activation_status": "active",
+        "activation_status": "requires_reference_profile_resolution",
         "criticality": "release_blocking",
         "measure_kind": "prepared_column",
         "publisher": "Stats NZ",
         "target_role": "calibration",
         "reference_set": "calibration",
         "method_card_row": "MC5",
+        "parking_reason": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
         "source_snapshot": "2023-03-07 Census",
         "growth_denominator_snapshot": "2023-06-30 ERP",
         "target_level_snapshot": "2025-06-30 ERP",
@@ -25267,7 +25513,9 @@
         "held_households_per_erp_person": "true",
         "held_census_families_per_erp_person": "true",
         "projection_from_june2025_to_model_period": "none",
-        "method_decision": "d1598; g8r-hub-rulings 2026-10-22"
+        "method_decision": "d1598; g8r-hub-rulings 2026-10-22",
+        "required_reference_profile": "census_residual_allocation",
+        "growth_geography_proxy": "national-growth proxy"
       },
       "hierarchy": {
         "provider": {
@@ -25279,9 +25527,10 @@
           "label": "Housing Tenure",
           "provider_id": "stats_nz"
         },
-        "target_label": "Area Outside Region households: Not owned, June 2025 ERP-density bridge (national-growth proxy)"
+        "target_label": "Area Outside Region households: Not owned, June 2025 ERP-density bridge (national-growth proxy); d1886 profile-resolved allocation"
       },
       "filter": "household_region_99_not_owned_indicator",
+      "notes": "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile.",
       "value_operation": "rolled_forward_by_ratio",
       "value_operands": [
         {
diff --git a/packages/microcosm-build/src/microcosm/build/reference_profiles.py b/packages/microcosm-build/src/microcosm/build/reference_profiles.py
new file mode 100644
index 0000000000..9a11ac22af
--- /dev/null
+++ b/packages/microcosm-build/src/microcosm/build/reference_profiles.py
@@ -0,0 +1,278 @@
+"""Resolve declarative reference profiles before activation or compilation.
+
+This layer changes selectors, never Ledger observations. Selection dimensions
+are supplied by the consumer; subsequent transformation kinds can share the
+same effective-document and preparation identities.
+"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+from collections.abc import Mapping
+
+from microcosm.build.country_spec import (
+    _carried_value_keys,
+    _validate_target_references,
+)
+from microcosm.build.ledger_targets import ALLOCATED_RESIDUAL_BY_RATIO
+from microcosm.graph.canonical import canonical_json
+
+REFERENCE_PROFILE_RESOLVER_VERSION = "reference-profiles-v1"
+REQUIRES_REFERENCE_PROFILE_RESOLUTION = "requires_reference_profile_resolution"
+REFERENCE_DOCUMENT_KEYS = frozenset(
+    {"country", "schema_version", "hierarchy", "target_references"}
+)
+
+
+def reference_document_sha256(document: object) -> str:
+    """Hash the actual canonical document, rather than its resource filename."""
+    return hashlib.sha256(canonical_json(document)).hexdigest()
+
+
+def _copy(document: object):
+    return json.loads(canonical_json(document))
+
+
+def _mapping(value: object, context: str) -> dict:
+    if not isinstance(value, Mapping):
+        raise ValueError(f"{context} must be an object.")
+    return dict(value)
+
+
+def _sequence(value: object, context: str) -> list:
+    if not isinstance(value, (list, tuple)):
+        raise ValueError(f"{context} must be a list.")
+    return list(value)
+
+
+def _selection_identity(receipt: Mapping) -> dict:
+    return {
+        key: receipt[key]
+        for key in (
+            "resolver_version",
+            "base_references_sha256",
+            "base_intervals_sha256",
+            "selected_declarations_sha256",
+            "selection",
+        )
+    }
+
+
+def resolve_reference_profiles(
+    base_reference_document: Mapping,
+    profile_declarations: Mapping,
+    selection: Mapping,
+    interval_document: Mapping | None = None,
+) -> tuple[dict, dict | None, dict]:
+    """Return effective references, effective intervals and a bound receipt.
+
+    Only selected declarations enter selection identity. An unavailable profile
+    refuses; an explicitly deferred dimension is reported without claiming its
+    transformations ran. Interval transformations are intentionally unsupported
+    until a consumer declares their complete transformation contract.
+    Resource headers are bound into the base identity; effective references use
+    the compiler's closed document shape.
+    """
+    base = _copy(_mapping(base_reference_document, "base references"))
+    declarations = _copy(_mapping(profile_declarations, "profile declarations"))
+    if _carried_value_keys(declarations):
+        raise ValueError("Reference profile declarations carry observed values.")
+    selected = _mapping(selection, "profile selection")
+    if (
+        type(declarations.get("schema_version")) is not int
+        or declarations["schema_version"] != 1
+    ):
+        raise ValueError("Profile declarations require schema_version 1.")
+    dimensions = _mapping(declarations.get("dimensions"), "profile dimensions")
+    if set(selected) - set(dimensions):
+        raise ValueError("Unknown profile selection dimension.")
+    rows = _sequence(base.get("target_references"), "target references")
+    by_name = {}
+    for row in rows:
+        row = _mapping(row, "reference")
+        name = row.get("name")
+        if not isinstance(name, str) or not name or name in by_name:
+            raise ValueError("Reference names must be nonempty and unique.")
+        metadata = _mapping(row.get("metadata", {}), "reference metadata")
+        if metadata.get("reference_profiles_resolved"):
+            raise ValueError("Reference profiles have already been resolved.")
+        by_name[name] = row
+    intervals = None if interval_document is None else _copy(interval_document)
+    chosen, resolved_selection, deferred = {}, {}, []
+    for dimension, raw_dimension in sorted(dimensions.items()):
+        dimension_row = _mapping(raw_dimension, "profile dimension")
+        profiles = _mapping(dimension_row.get("profiles"), "named profiles")
+        name = selected.get(dimension, dimension_row.get("default"))
+        if not isinstance(name, str) or name not in profiles:
+            raise ValueError(f"Unknown profile {name!r} for {dimension!r}.")
+        profile = _mapping(profiles[name], "selected profile")
+        if type(profile.get("deferred", False)) is not bool:
+            raise ValueError("A profile's deferred status must be boolean.")
+        if profile.get("available", True) is not True:
+            raise ValueError(f"Profile {dimension!r}/{name!r} is unavailable.")
+        transformations = _sequence(
+            profile.get("transformations", []), "profile transformations"
+        )
+        if profile.get("deferred", False):
+            if transformations:
+                raise ValueError("A deferred profile cannot apply transformations.")
+            deferred.append(dimension)
+        chosen[dimension] = {"name": name, "declaration": profile}
+        resolved_selection[dimension] = name
+    receipt = {
+        "resolver_version": REFERENCE_PROFILE_RESOLVER_VERSION,
+        "base_references_sha256": reference_document_sha256(base),
+        "base_intervals_sha256": (
+            None if intervals is None else reference_document_sha256(intervals)
+        ),
+        "selected_declarations_sha256": reference_document_sha256(chosen),
+        "selection": resolved_selection,
+    }
+    selection_hash = reference_document_sha256(_selection_identity(receipt))
+    interval_hash = None if intervals is None else reference_document_sha256(intervals)
+    transformed, policies = {}, []
+    for dimension, choice in chosen.items():
+        for raw_transform in choice["declaration"].get("transformations", []):
+            transform = _mapping(raw_transform, "reference transformation")
+            allowed = {
+                "reference_names",
+                "operation",
+                "value_operands",
+                "metadata",
+                "notes",
+                "target_label",
+            }
+            if set(transform) - allowed:
+                raise ValueError("Unknown reference transformation fields.")
+            if transform.get("operation") != ALLOCATED_RESIDUAL_BY_RATIO:
+                raise ValueError("Unsupported reference profile transformation.")
+            names = _sequence(transform.get("reference_names"), "transformed names")
+            if not names or any(not isinstance(name, str) for name in names):
+                raise ValueError("A transformation needs explicit reference names.")
+            operands = _sequence(transform.get("value_operands"), "value operands")
+            metadata = _mapping(transform.get("metadata", {}), "profile metadata")
+            if any(
+                not isinstance(key, str) or not isinstance(value, str) or not value
+                for key, value in metadata.items()
+            ):
+                raise ValueError("Profile metadata requires nonempty strings.")
+            if set(metadata) & {
+                "activation_status",
+                "required_reference_profile",
+                "reference_selection_sha256",
+                "effective_intervals_sha256",
+                "reference_profiles_resolved",
+            }:
+                raise ValueError("A profile cannot override resolution identities.")
+            if _carried_value_keys(transform):
+                raise ValueError("Reference transformations carry observed values.")
+            for name in names:
+                if name not in by_name:
+                    raise ValueError(f"Profile names missing reference {name!r}.")
+                if name in transformed:
+                    raise ValueError(
+                        f"Duplicate or incompatible transformation: {name!r}."
+                    )
+                row = by_name[name]
+                row["value_operation"] = transform["operation"]
+                row["value_operands"] = _copy(operands)
+                row_metadata = row.setdefault("metadata", {})
+                prerequisite = row_metadata.get("required_reference_profile")
+                if prerequisite and prerequisite != dimension:
+                    raise ValueError(
+                        "Transformation does not satisfy the reference profile prerequisite."
+                    )
+                row_metadata.update(metadata)
+                row_metadata["reference_selection_sha256"] = selection_hash
+                row_metadata["reference_profiles_resolved"] = "1"
+                if interval_hash is not None:
+                    row_metadata["effective_intervals_sha256"] = interval_hash
+                if (
+                    row_metadata.get("activation_status")
+                    == REQUIRES_REFERENCE_PROFILE_RESOLUTION
+                ):
+                    row_metadata["activation_status"] = "active"
+                    row_metadata.pop("activation_reason", None)
+                    row_metadata.pop("parking_reason", None)
+                if "notes" in transform:
+                    if not isinstance(transform["notes"], str):
+                        raise ValueError("Transformation notes must be text.")
+                    row["notes"] = transform["notes"]
+                if "target_label" in transform:
+                    hierarchy = _mapping(row.get("hierarchy"), "reference hierarchy")
+                    hierarchy["target_label"] = transform["target_label"]
+                    row["hierarchy"] = hierarchy
+                transformed[name] = {
+                    "dimension": dimension,
+                    "profile": choice["name"],
+                    "operation": transform["operation"],
+                    "metadata": metadata,
+                    "operand_selectors": _copy(operands),
+                    "source_period": row.get("ledger_selector", {}).get("period_value"),
+                    "target_period": row.get("period"),
+                }
+            policies.append(
+                {"dimension": dimension, "profile": choice["name"], **metadata}
+            )
+    base["target_references"] = [by_name[row["name"]] for row in rows]
+    effective = {
+        key: value for key, value in base.items() if key in REFERENCE_DOCUMENT_KEYS
+    }
+    _validate_target_references(effective, country=effective.get("country"))
+    receipt.update(
+        reference_selection_sha256=selection_hash,
+        effective_references_sha256=reference_document_sha256(effective),
+        effective_intervals_sha256=interval_hash,
+        transformed_names=sorted(transformed),
+        transformations={name: transformed[name] for name in sorted(transformed)},
+        policies=policies,
+        deferred_dimensions=deferred,
+    )
+    receipt["receipt_sha256"] = reference_document_sha256(receipt)
+    return effective, intervals, receipt
+
+
+def validate_reference_resolution(
+    document: Mapping,
+    receipt: Mapping,
+    *,
+    references_sha256: str | None = None,
+    interval_document: Mapping | None = None,
+) -> dict:
+    """Refuse stale effective documents, receipts or interval companions."""
+    resolution = _copy(_mapping(receipt, "reference resolution receipt"))
+    if resolution.get("resolver_version") != REFERENCE_PROFILE_RESOLVER_VERSION:
+        raise ValueError("Unknown reference resolver version.")
+    claimed_receipt_hash = resolution.pop("receipt_sha256", None)
+    if claimed_receipt_hash != reference_document_sha256(resolution):
+        raise ValueError("Reference resolution receipt hash mismatch.")
+    resolution["receipt_sha256"] = claimed_receipt_hash
+    actual = reference_document_sha256(document)
+    if actual != resolution.get("effective_references_sha256") or (
+        references_sha256 is not None and actual != references_sha256
+    ):
+        raise ValueError("Effective reference document hash mismatch.")
+    try:
+        selection_hash = reference_document_sha256(_selection_identity(resolution))
+    except KeyError as error:
+        raise ValueError("Reference resolution identity is incomplete.") from error
+    if selection_hash != resolution.get("reference_selection_sha256"):
+        raise ValueError("Reference selection identity mismatch.")
+    if interval_document is not None and reference_document_sha256(
+        interval_document
+    ) != resolution.get("effective_intervals_sha256"):
+        raise ValueError("Effective interval document hash mismatch.")
+    names = []
+    for row in document.get("target_references", ()):
+        metadata = row.get("metadata", {})
+        if metadata.get("reference_profiles_resolved"):
+            names.append(row["name"])
+            if metadata.get("reference_selection_sha256") != selection_hash or (
+                metadata.get("effective_intervals_sha256")
+                != resolution.get("effective_intervals_sha256")
+            ):
+                raise ValueError("Effective reference profile identity mismatch.")
+    if sorted(names) != resolution.get("transformed_names"):
+        raise ValueError("Resolution receipt transformed names mismatch.")
+    return resolution
diff --git a/packages/microcosm-build/src/microcosm/build/transport/artifact_types.py b/packages/microcosm-build/src/microcosm/build/transport/artifact_types.py
index 7dc2c8def1..24095f909e 100644
--- a/packages/microcosm-build/src/microcosm/build/transport/artifact_types.py
+++ b/packages/microcosm-build/src/microcosm/build/transport/artifact_types.py
@@ -27,11 +27,13 @@
     "EXPORT_READBACK_TYPE",
     "GATE_REPORT_TYPE",
     "PACKAGE_RECEIPT_TYPE",
+    "CALIBRATION_PREPARATION_TYPE",
     "TARGET_SURFACE_TYPE",
 ]
 
 #: A compiled target registry plus its reference trace (canonical JSON).
 TARGET_SURFACE_TYPE = ArtifactType("microcosm.targets.surface", 1)
+CALIBRATION_PREPARATION_TYPE = ArtifactType("microcosm.targets.preparation", 1)
 #: Hold-out comparators measured on a population (canonical JSON).
 COMPARISON_TYPE = ArtifactType("microcosm.targets.comparison", 1)
 #: Source-household support and donor dollar influence in each scenario cell.
@@ -63,6 +65,9 @@
         "reporting.carry_income_decile@1": MappingProxyType({}),
         "reporting.receipt_group@1": MappingProxyType({}),
         "targets.compile@1": MappingProxyType({"surface": TARGET_SURFACE_TYPE}),
+        "calibration.prepare@1": MappingProxyType(
+            {"preparation": CALIBRATION_PREPARATION_TYPE}
+        ),
         "targets.problem@1": MappingProxyType({"problem": PROBLEM_TYPE}),
         "takeup.compare@1": MappingProxyType({"comparison": COMPARISON_TYPE}),
         "takeup.cell_diagnostics@1": MappingProxyType(
diff --git a/packages/microcosm-build/src/microcosm/build/transport/compose.py b/packages/microcosm-build/src/microcosm/build/transport/compose.py
index b9d957799f..211cf380a9 100644
--- a/packages/microcosm-build/src/microcosm/build/transport/compose.py
+++ b/packages/microcosm-build/src/microcosm/build/transport/compose.py
@@ -69,6 +69,7 @@
     ATOMIC_SUPPORT_TYPE,
 )
 from microcosm.build.ledger_artifact import CHRONICLE_FEED_RESOURCE
+from microcosm.build.reference_profiles import resolve_reference_profiles
 from microcosm.calibrate.ordered_kernels import OUTPUT_TYPES
 from microcosm.graph import (
     ArtifactInput,
@@ -128,6 +129,7 @@
         RULES_ROUTER,
         "takeup.assign@1",
         "targets.compile@1",
+        "calibration.prepare@1",
         "targets.problem@1",
         "calibrate.ordered_adam@1",
         "geography.support_from_facts@1",
@@ -350,7 +352,7 @@ def _target_feed_params(
     return result
 
 
-def transport_resource(spec: Mapping[str, object], name: str) -> Mapping:
+def _raw_transport_resource(spec: Mapping[str, object], name: str) -> Mapping:
     """One JSON resource of a normalized transport spec.
 
     A spec is ``{"country", "resources", "resource_hashes"?}``. A resource
@@ -367,7 +369,63 @@ def transport_resource(spec: Mapping[str, object], name: str) -> Mapping:
     return _mapping(value, f"{stem}.json")
 
 
-def _resource_digest(spec: Mapping[str, object], name: str) -> str:
+def reference_profile_view(
+    spec: Mapping[str, object], selection: Mapping | None = None
+):
+    """Resolve the declared reference resource before activation or composition."""
+    if not _has_resource(spec, "reference_profiles"):
+        return None
+    declarations = _raw_transport_resource(spec, "reference_profiles")
+    resource = declarations.get("reference_resource", "target_references")
+    dimensions = _mapping(
+        declarations.get("dimensions"), "reference profile dimensions"
+    )
+    selected = (
+        {}
+        if selection is None
+        else {name: value for name, value in selection.items() if name in dimensions}
+    )
+    intervals = declarations.get("interval_resource")
+    return resolve_reference_profiles(
+        _raw_transport_resource(spec, resource),
+        declarations,
+        selected,
+        interval_document=None
+        if intervals is None
+        else _raw_transport_resource(spec, intervals),
+    )
+
+
+def transport_resource(
+    spec: Mapping[str, object], name: str, *, profile_selection: Mapping | None = None
+) -> Mapping:
+    """Read the same effective reference/interval view used by compilation."""
+    if _has_resource(spec, "reference_profiles"):
+        declarations = _raw_transport_resource(spec, "reference_profiles")
+        reference = _stem(declarations.get("reference_resource", "target_references"))
+        interval = declarations.get("interval_resource")
+        interval = None if interval is None else _stem(interval)
+        if _stem(name) in {reference, interval}:
+            refs, intervals, _ = reference_profile_view(spec, profile_selection)
+            return refs if _stem(name) == reference else intervals
+    return _raw_transport_resource(spec, name)
+
+
+def _resource_digest(
+    spec: Mapping[str, object], name: str, *, profile_selection=None
+) -> str:
+    if _has_resource(spec, "reference_profiles"):
+        declarations = _raw_transport_resource(spec, "reference_profiles")
+        interval = declarations.get("interval_resource")
+        if _stem(name) in {
+            _stem(declarations.get("reference_resource", "target_references")),
+            None if interval is None else _stem(interval),
+        }:
+            return hashlib.sha256(
+                canonical_json(
+                    transport_resource(spec, name, profile_selection=profile_selection)
+                )
+            ).hexdigest()
     hashes = _mapping(spec.get("resource_hashes", {}), "resource_hashes")
     stem = _stem(name)
     digest = hashes.get(stem, hashes.get(f"{stem}.json"))
@@ -452,6 +510,16 @@ def _null_paths(value: object, path: str = "") -> Iterator[str]:
             yield from _null_paths(item, f"{path}[{index}]")
 
 
+def _reference_activation_gaps(document: Mapping, resource: str) -> Iterator[str]:
+    for row in _sequence(
+        document.get("target_references"), f"{resource}.target_references"
+    ):
+        reference = _mapping(row, f"{resource} reference")
+        metadata = _mapping(reference.get("metadata", {}), f"{resource}.metadata")
+        if metadata.get("activation_status", "active") != "active":
+            yield f"placeholder reference {resource}.{reference.get('name', '?')}"
+
+
 def validate_transport_activation(spec: Mapping[str, object]) -> None:
     """Refuse enumerated activation gaps before registry/CREATE/source reads.
 
@@ -466,30 +534,46 @@ def validate_transport_activation(spec: Mapping[str, object]) -> None:
     """
 
     missing = []
+    # Resolve first so activation never inspects an executable profile's raw rows.
+    reference_profile_view(spec)
     selections = (
         tuple(_declared_resource_selections(transport_resource(spec, GRAPH_RESOURCE)))
         if _has_resource(spec, GRAPH_RESOURCE)
         else ()
     )
-    selections = [(selection, False) for selection in selections]
+    selections = [(selection, False, None) for selection in selections]
     if _has_resource(spec, "entitlement_graph") and _has_resource(spec, "scenarios"):
         from .entitlement import _rows
 
         rows, _ = _rows(spec)
-        selections.extend(
-            (selection, True)
-            for selection in _declared_resource_selections(
-                {"nodes": [row for row, _ in rows]}
+        for row, scenario in rows:
+            knobs = None if scenario is None else scenario.get("knobs", {})
+            selections.extend(
+                (selection, True, knobs)
+                for selection in _declared_resource_selections({"nodes": [row]})
             )
-        )
     selected = {
         selection["resource"].removesuffix(".json")
-        for selection, _ in selections
+        for selection, _, _ in selections
         if isinstance(selection["resource"], str) and selection["resource"]
     }
-    for selection, allow_json_sequences in selections:
+    selected_reference_views = {}
+    for selection, allow_json_sequences, profile_selection in selections:
         try:
-            _resource_param(spec, selection, allow_json_sequences=allow_json_sequences)
+            _resource_param(
+                spec,
+                selection,
+                allow_json_sequences=allow_json_sequences,
+                profile_selection=profile_selection,
+            )
+            if profile_selection is not None:
+                resource = _stem(selection["resource"])
+                document = transport_resource(
+                    spec, resource, profile_selection=profile_selection
+                )
+                if "target_references" in document:
+                    identity = hashlib.sha256(canonical_json(document)).hexdigest()
+                    selected_reference_views[resource, identity] = document
         except (ValueError, TypeError) as error:
             missing.append(
                 f"Resource {selection['resource']!r} path {selection.get('path', [])!r}: "
@@ -517,18 +601,18 @@ def validate_transport_activation(spec: Mapping[str, object]) -> None:
         if _has_resource(spec, name)
         and "target_references" in transport_resource(spec, name)
     )
+    checked_reference_views = set()
     for resource in sorted(reference_resources):
         if not _has_resource(spec, resource):
             missing.append(f"{resource}.json")
             continue
-        rows = transport_resource(spec, resource).get("target_references")
-        for row in _sequence(rows, f"{resource}.target_references"):
-            reference = _mapping(row, f"{resource} reference")
-            metadata = _mapping(reference.get("metadata", {}), f"{resource}.metadata")
-            if metadata.get("activation_status", "active") != "active":
-                missing.append(
-                    f"placeholder reference {resource}.{reference.get('name', '?')}"
-                )
+        document = transport_resource(spec, resource)
+        identity = hashlib.sha256(canonical_json(document)).hexdigest()
+        checked_reference_views.add((resource, identity))
+        missing.extend(_reference_activation_gaps(document, resource))
+    for (resource, identity), document in selected_reference_views.items():
+        if (resource, identity) not in checked_reference_views:
+            missing.extend(_reference_activation_gaps(document, resource))
     receipt = (
         transport_resource(spec, "receipt_contract")
         if _has_resource(spec, "receipt_contract")
@@ -898,7 +982,11 @@ def _param(
 
 
 def _resource_param(
-    spec: Mapping[str, object], value: Mapping, *, allow_json_sequences: bool = False
+    spec: Mapping[str, object],
+    value: Mapping,
+    *,
+    allow_json_sequences: bool = False,
+    profile_selection: Mapping | None = None,
 ) -> object:
     """Resolve and validate one literal resource selection for preflight/params.
 
@@ -919,12 +1007,14 @@ def _resource_param(
         raise ValueError(
             "The graph resource's own digest cannot enter node parameters."
         )
-    document: object = transport_resource(spec, name)
+    document: object = transport_resource(
+        spec, name, profile_selection=profile_selection
+    )
     path = tuple(_sequence(value.get("path", ()), "resource selection path"))
     if encoding == "sha256":
         if path:
             raise ValueError("A sha256 selection names a whole resource (no path).")
-        return _resource_digest(spec, name)
+        return _resource_digest(spec, name, profile_selection=profile_selection)
     for component in path:
         if not isinstance(document, Mapping) or component not in document:
             raise ValueError(f"Resource {name!r} has no selected path {list(path)!r}.")
@@ -1081,6 +1171,7 @@ def _node(
     *,
     allowed_kernels: frozenset[str] = SKELETON_KERNELS,
     resolved_params: Mapping[str, object] | None = None,
+    profile_selection: Mapping | None = None,
 ) -> Node:
     _safe_node_id(row.get("id"))
     unknown = set(row) - _NODE_FIELDS
@@ -1102,6 +1193,15 @@ def _node(
         }
     )
     params = _target_feed_params(spec, kernel, params)
+    if (
+        kernel in TARGET_COMPILATION_KERNELS | {"calibration.prepare@1"}
+        and "references" in params
+    ):
+        view = reference_profile_view(spec, profile_selection)
+        if view is not None:
+            references, _, receipt = view
+            if canonical_json(references).decode("utf-8") == params["references"]:
+                params["reference_resolution"] = canonical_json(receipt).decode("utf-8")
     if "rules_binding" in row:
         params = _rules_params(spec, row, params, config)
     elif kernel == RULES_ROUTER:
diff --git a/packages/microcosm-build/src/microcosm/build/transport/entitlement.py b/packages/microcosm-build/src/microcosm/build/transport/entitlement.py
index cba4390591..14bb8faaae 100644
--- a/packages/microcosm-build/src/microcosm/build/transport/entitlement.py
+++ b/packages/microcosm-build/src/microcosm/build/transport/entitlement.py
@@ -160,8 +160,16 @@ def _parameter(spec, config, value, scenario):
         raise ValueError(
             "Scenario objects require json encoding; encodings are value, json, sha256."
         )
-    if value.get("encoding") == "json" and "resource" in value:
-        selected = json.loads(_resource_param(spec, value, allow_json_sequences=True))
+    if "resource" in value:
+        selected = _resource_param(
+            spec,
+            value,
+            allow_json_sequences=True,
+            profile_selection=None if scenario is None else scenario.get("knobs", {}),
+        )
+        if value.get("encoding") != "json":
+            return selected
+        selected = json.loads(selected)
         return canonical_json(_bind_data(spec, config, selected)).decode("utf-8")
     if not ({"resource", "prepared"} & set(value)):
         return canonical_json(_bind_data(spec, config, value)).decode("utf-8")
@@ -452,6 +460,9 @@ def __call__(self, spec: Mapping, config: TransportGraphConfig, skeleton: Graph)
                     types,
                     allowed_kernels=_KERNELS,
                     resolved_params=params,
+                    profile_selection=None
+                    if scenario is None
+                    else scenario.get("knobs", {}),
                 )
             )
         bands = _mapping(document["bands"], "entitlement bands")
diff --git a/packages/microcosm-build/src/microcosm/build/transport/takeup_kernels.py b/packages/microcosm-build/src/microcosm/build/transport/takeup_kernels.py
index 672c0da2b3..69451c7dc1 100644
--- a/packages/microcosm-build/src/microcosm/build/transport/takeup_kernels.py
+++ b/packages/microcosm-build/src/microcosm/build/transport/takeup_kernels.py
@@ -609,6 +609,7 @@ class TakeupGapKernel(KernelBase):
         {
             "facts_sha256",
             "chronicle_feed_pin",
+            "reference_resolution",
             "annualisation_sha256",
             "source_household_column",
             "cell_support",
@@ -691,6 +692,11 @@ def run(self, context: KernelContext) -> KernelResult:
                 if "chronicle_feed_pin" in context.params
                 else None
             ),
+            reference_resolution=(
+                canonical_document_param(context, self.ref, "reference_resolution")
+                if "reference_resolution" in context.params
+                else None
+            ),
         )
         surface = decode_target_surface(surface_payload)
         problem = target_kernels._compiled_problem(
diff --git a/packages/microcosm-build/src/microcosm/build/transport/target_kernels.py b/packages/microcosm-build/src/microcosm/build/transport/target_kernels.py
index 5132feffdf..2752a924a0 100644
--- a/packages/microcosm-build/src/microcosm/build/transport/target_kernels.py
+++ b/packages/microcosm-build/src/microcosm/build/transport/target_kernels.py
@@ -48,10 +48,12 @@
 
 import numpy as np
 
+import microcosm.build.calibration_columns as calibration_columns_module
 import microcosm.build.chronicle_epoch as chronicle_epoch_module
 import microcosm.build.country_spec as country_spec_module
 import microcosm.build.ledger_artifact as ledger_artifact_module
 import microcosm.build.ledger_targets as ledger_targets_module
+import microcosm.build.reference_profiles as reference_profiles_module
 import microcosm.calibrate.artifacts as calibrate_artifacts_module
 import microcosm.calibrate.hierarchy as hierarchy_module
 import microcosm.calibrate.matrix as matrix_module
@@ -61,17 +63,23 @@
 import microcosm.frame.bundle as frame_bundle_module
 import microcosm.frame.schema as frame_schema_module
 import microcosm.frame.weights as frame_weights_module
+from microcosm.build.calibration_columns import prepare_calibration_columns
 from microcosm.build.country_spec import _validate_target_references
 from microcosm.build.ledger_artifact import load_ledger_consumer_artifact
 from microcosm.build.ledger_targets import (
     LedgerTargetReference,
     compile_ledger_target_references,
 )
+from microcosm.build.reference_profiles import (
+    REFERENCE_DOCUMENT_KEYS,
+    validate_reference_resolution,
+)
 from microcosm.calibrate import TargetRegistry, TargetSpec
 from microcosm.calibrate.artifacts import encode_problem
 from microcosm.calibrate.matrix import CalibrationProblem, build_constraint_matrix
 from microcosm.frame import Frame
 from microcosm.graph import (
+    ROWS_ALL,
     Capabilities,
     Determinism,
     KernelBase,
@@ -85,7 +93,11 @@
 from microcosm.graph.canonical import canonical_json
 
 from . import artifact_types, graph_inputs
-from .artifact_types import COMPARISON_TYPE, TARGET_SURFACE_TYPE
+from .artifact_types import (
+    CALIBRATION_PREPARATION_TYPE,
+    COMPARISON_TYPE,
+    TARGET_SURFACE_TYPE,
+)
 from .graph_inputs import (
     canonical_document_param,
     context_frame,
@@ -102,6 +114,8 @@
     "TARGET_COMPILATION_KERNELS",
     "COMPARISON_TYPE",
     "TARGETS_COMPILE",
+    "CALIBRATION_PREPARE",
+    "CalibrationPrepareKernel",
     "TARGETS_PROBLEM",
     "TAKEUP_COMPARE",
     "TARGET_SURFACE_TYPE",
@@ -125,12 +139,6 @@
 _COMPARISON_KIND = "transport_target_comparison"
 _PROBLEM_BINDINGS_SCHEMA = "microcosm.transport.problem-bindings.v1"
 
-#: The keys of a node's target-reference document: the subset of a country's
-#: ``target_references.json`` its references need.
-_REFERENCE_DOCUMENT_KEYS = frozenset(
-    {"country", "schema_version", "hierarchy", "target_references"}
-)
-
 #: Statuses ``compile_ledger_target_references`` treats as executable
 #: (``ledger_targets.py`` ``_require_executable_reference``): an absent or
 #: empty ``activation_status``, or ``"active"``.
@@ -154,11 +162,11 @@ def parse_reference_document(
     compiled target to its reference by name.
     """
 
-    unknown = sorted(set(document) - _REFERENCE_DOCUMENT_KEYS)
+    unknown = sorted(set(document) - REFERENCE_DOCUMENT_KEYS)
     if unknown:
         raise ValueError(
             f"A node's target-reference document carries only "
-            f"{sorted(_REFERENCE_DOCUMENT_KEYS)}; got also {unknown}. Keys the "
+            f"{sorted(REFERENCE_DOCUMENT_KEYS)}; got also {unknown}. Keys the "
             "kernel would not read must not ride in its parameters."
         )
     references = _validate_target_references(document, country=country)
@@ -192,6 +200,7 @@ class TargetSurface:
     references_sha256: str
     facts: Mapping[str, object]
     sha256: str
+    reference_resolution: Mapping[str, object] | None = None
 
 
 def _trace_row(spec: TargetSpec, reference: LedgerTargetReference) -> dict[str, object]:
@@ -211,6 +220,7 @@ def encode_target_surface(
     *,
     references_sha256: str,
     facts: Mapping[str, object],
+    reference_resolution: Mapping[str, object] | None = None,
 ) -> bytes:
     """Encode a compiled registry with its one-to-one reference trace."""
 
@@ -223,28 +233,76 @@ def encode_target_surface(
             "A target surface needs exactly one compiled target per reference, "
             "in reference order."
         )
-    payload = canonical_json(
-        {
-            "schema_version": 1,
-            "kind": _SURFACE_KIND,
+    document = {
+        "schema_version": 1,
+        "kind": _SURFACE_KIND,
+        "country": registry.country,
+        "registry": {
             "country": registry.country,
-            "registry": {
-                "country": registry.country,
-                "version": registry.version,
-                "specs": [spec.to_dict() for spec in specs],
-            },
-            "trace": [
-                _trace_row(spec, reference)
-                for spec, reference in zip(specs, references, strict=True)
-            ],
-            "references_sha256": references_sha256,
-            "facts": dict(facts),
-        }
-    )
+            "version": registry.version,
+            "specs": [spec.to_dict() for spec in specs],
+        },
+        "trace": [
+            _trace_row(spec, reference)
+            for spec, reference in zip(specs, references, strict=True)
+        ],
+        "references_sha256": references_sha256,
+        "facts": dict(facts),
+    }
+    if reference_resolution is not None:
+        document["reference_resolution"] = dict(reference_resolution)
+    payload = canonical_json(document)
     decode_target_surface(payload)
     return payload
 
 
+def _surface_resolution(document: Mapping, registry: TargetRegistry) -> Mapping | None:
+    resolution = document.get("reference_resolution")
+    resolved = [
+        spec
+        for spec in registry.specs
+        if spec.metadata.get("reference_profiles_resolved")
+    ]
+    if resolution is None:
+        if resolved:
+            raise ValueError(
+                "A profile-resolved surface requires its reference resolution receipt."
+            )
+        return None
+    if not isinstance(resolution, Mapping):
+        raise ValueError("A surface reference resolution receipt must be an object.")
+    body = dict(resolution)
+    claimed = body.pop("receipt_sha256", None)
+    if (
+        body.get("resolver_version")
+        != reference_profiles_module.REFERENCE_PROFILE_RESOLVER_VERSION
+        or claimed != reference_profiles_module.reference_document_sha256(body)
+    ):
+        raise ValueError("Surface reference resolution receipt hash mismatch.")
+    if resolution.get("effective_references_sha256") != document["references_sha256"]:
+        raise ValueError("Surface effective reference hash mismatch.")
+    try:
+        selection = reference_profiles_module.reference_document_sha256(
+            reference_profiles_module._selection_identity(resolution)
+        )
+    except KeyError as error:
+        raise ValueError(
+            "Surface reference selection identity is incomplete."
+        ) from error
+    if selection != resolution.get("reference_selection_sha256"):
+        raise ValueError("Surface reference selection identity mismatch.")
+    for spec in resolved:
+        if spec.metadata.get(
+            "reference_selection_sha256"
+        ) != selection or spec.metadata.get(
+            "effective_intervals_sha256"
+        ) != resolution.get("effective_intervals_sha256"):
+            raise ValueError("Surface reference profile identity mismatch.")
+    if sorted(spec.name for spec in resolved) != resolution.get("transformed_names"):
+        raise ValueError("Surface resolution transformed names mismatch.")
+    return resolution
+
+
 def decode_target_surface(payload: bytes) -> TargetSurface:
     """Validate a surface's shape, its registry identity and its trace."""
 
@@ -256,7 +314,7 @@ def decode_target_surface(payload: bytes) -> TargetSurface:
     if (
         document.get("schema_version") != 1
         or document.get("kind") != _SURFACE_KIND
-        or set(document)
+        or set(document) - {"reference_resolution"}
         != {
             "schema_version",
             "kind",
@@ -302,6 +360,7 @@ def decode_target_surface(payload: bytes) -> TargetSurface:
         references_sha256=document["references_sha256"],
         facts=document["facts"],
         sha256=sha256_text(payload),
+        reference_resolution=_surface_resolution(document, registry),
     )
 
 
@@ -313,6 +372,7 @@ def compile_target_surface(
     references_sha256: str,
     expected_facts_sha256: str | None = None,
     feed_pin: Mapping[str, object] | None = None,
+    reference_resolution: Mapping[str, object] | None = None,
 ) -> tuple[bytes, TargetRegistry]:
     """Compile a reference document against one consumer artifact.
 
@@ -324,6 +384,17 @@ def compile_target_surface(
     """
 
     references = parse_reference_document(document, country=country)
+    resolved = any(
+        ref.metadata.get("reference_profiles_resolved") for ref in references
+    )
+    if resolved and reference_resolution is None:
+        raise ValueError(
+            "Profile-resolved references require a reference resolution receipt."
+        )
+    if reference_resolution is not None:
+        reference_resolution = validate_reference_resolution(
+            document, reference_resolution, references_sha256=references_sha256
+        )
     artifact = load_ledger_consumer_artifact(
         facts_path, expected_facts_sha256=expected_facts_sha256, feed_pin=feed_pin
     )
@@ -339,6 +410,7 @@ def compile_target_surface(
             "manifest_sha256": artifact.manifest_sha256,
             "n_facts": len(artifact.facts),
         },
+        reference_resolution=reference_resolution,
     )
     return payload, registry
 
@@ -368,6 +440,11 @@ def _registry_from_context(
             if "chronicle_feed_pin" in context.params
             else None
         ),
+        reference_resolution=(
+            canonical_document_param(context, ref, "reference_resolution")
+            if "reference_resolution" in context.params
+            else None
+        ),
     )
     return registry, payload
 
@@ -412,6 +489,7 @@ def _optional_float(value: float) -> float | None:
     ledger_targets_module,
     ledger_artifact_module,
     chronicle_epoch_module,
+    reference_profiles_module,
     registry_module,
     target_module,
     hierarchy_module,
@@ -426,6 +504,197 @@ def _optional_float(value: float) -> float | None:
 )
 
 
+class CalibrationPrepareKernel(KernelBase):
+    """Prepare declared columns and attest their reference-profile identity."""
+
+    ref = "calibration.prepare@1"
+    capabilities = Capabilities(
+        Determinism.DETERMINISTIC,
+        numeric=Numeric.BITWISE,
+        seed_source=SeedSource.NONE,
+        dependencies=("numpy", "pandas"),
+    )
+
+    def implementation_hash(self) -> str:
+        from .column_kernels import _columns
+
+        return source_hash(
+            type(self),
+            _columns,
+            graph_inputs,
+            artifact_types,
+            calibration_columns_module,
+            reference_profiles_module,
+            dependencies=self.capabilities.dependencies,
+        )
+
+    def run(self, context: KernelContext) -> KernelResult:
+        from .column_kernels import _columns
+
+        require_params(
+            context,
+            self.ref,
+            required=frozenset({"bindings", "references", "references_sha256"}),
+            optional=frozenset({"reference_resolution", "intervals"}),
+        )
+        require_outputs(context, self.ref)
+        if (
+            context.node.sources
+            or context.artifacts
+            or any(
+                item.rows != ROWS_ALL
+                for item in (*context.node.inputs, *context.node.outputs)
+            )
+        ):
+            raise ValueError(
+                f"{self.ref} requires whole tables and no external sources or artifacts."
+            )
+        bindings = canonical_document_param(context, self.ref, "bindings")
+        document = canonical_document_param(context, self.ref, "references")
+        digest = sha256_param(context, self.ref, "references_sha256")
+        resolution = None
+        if "reference_resolution" in context.params:
+            candidate = canonical_document_param(
+                context, self.ref, "reference_resolution"
+            )
+            if (
+                candidate.get("effective_intervals_sha256") is not None
+                and "intervals" not in context.params
+            ):
+                raise ValueError(
+                    "Calibration preparation requires its effective interval companion."
+                )
+            resolution = validate_reference_resolution(
+                document,
+                candidate,
+                references_sha256=digest,
+                interval_document=(
+                    canonical_document_param(context, self.ref, "intervals")
+                    if "intervals" in context.params
+                    else None
+                ),
+            )
+        elif any(
+            row.get("metadata", {}).get("reference_profiles_resolved")
+            for row in document.get("target_references", ())
+        ):
+            raise ValueError(
+                "Profile-resolved preparation requires a reference resolution receipt."
+            )
+        tables = prepare_calibration_columns(context.tables, bindings)
+        inventory = {
+            (row["entity"], row["name"])
+            for row in (*bindings["columns"], *bindings.get("roster_counts", ()))
+        }
+        if {(item.entity, item.column) for item in context.node.outputs} != inventory:
+            raise ValueError(
+                f"{self.ref} must own the exact prepared-column inventory."
+            )
+        columns = _columns(context, self.ref, tables)
+        evidence = {
+            "schema_version": 1,
+            "kind": "calibration_preparation",
+            "bindings_sha256": sha256_text(canonical_json(bindings)),
+            "bindings": bindings,
+            "references_sha256": digest,
+            "reference_selection_sha256": None
+            if resolution is None
+            else resolution["reference_selection_sha256"],
+            "effective_intervals_sha256": None
+            if resolution is None
+            else resolution["effective_intervals_sha256"],
+            "reference_resolution": resolution,
+            "columns": [
+                {
+                    "entity": entity,
+                    "name": name,
+                    "rows": len(tables[entity]),
+                    "entity_ids_sha256": sha256_text(
+                        canonical_json(columns[entity, name].index.tolist())
+                    ),
+                    "values_sha256": sha256_text(
+                        canonical_json(columns[entity, name].tolist())
+                    ),
+                }
+                for entity, name in sorted(inventory)
+            ],
+        }
+        payload = canonical_json(evidence)
+        return KernelResult(
+            columns=columns,
+            artifacts={"preparation": payload},
+            receipt={**evidence, "preparation_sha256": sha256_text(payload)},
+        )
+
+
+def _preparation_binding(
+    context: KernelContext, surface: TargetSurface
+) -> dict[str, object]:
+    resolution = surface.reference_resolution
+    artifact = context.artifacts.get("preparation")
+    if resolution is None and artifact is None:
+        return {}
+    if artifact is None or artifact.type != CALIBRATION_PREPARATION_TYPE:
+        raise ValueError(
+            "Resolved targets require a typed calibration preparation artifact."
+        )
+    evidence = json.loads(artifact.payload)
+    if (
+        canonical_json(evidence) != artifact.payload
+        or evidence.get("schema_version") != 1
+        or evidence.get("kind") != "calibration_preparation"
+    ):
+        raise ValueError("Invalid calibration preparation artifact.")
+    bindings = evidence.get("bindings", {})
+    inventory = {
+        (row["entity"], row["name"])
+        for row in (*bindings.get("columns", ()), *bindings.get("roster_counts", ()))
+    }
+    rows = evidence.get("columns", ())
+    if (
+        sha256_text(canonical_json(bindings)) != evidence.get("bindings_sha256")
+        or len(rows) != len(inventory)
+        or {(row["entity"], row["name"]) for row in rows} != inventory
+    ):
+        raise ValueError("Calibration preparation inventory differs from its bindings.")
+    expected = {
+        "references_sha256": surface.references_sha256,
+        "reference_selection_sha256": None
+        if resolution is None
+        else resolution["reference_selection_sha256"],
+        "effective_intervals_sha256": None
+        if resolution is None
+        else resolution["effective_intervals_sha256"],
+    }
+    if (
+        any(evidence.get(name) != value for name, value in expected.items())
+        or evidence.get("reference_resolution") != resolution
+    ):
+        raise ValueError(
+            "Calibration preparation reference-profile or interval identity mismatch."
+        )
+    for row in evidence.get("columns", ()):
+        table = context.tables.get(row["entity"])
+        if (
+            table is None
+            or row["name"] not in table
+            or len(table) != row["rows"]
+            or sha256_text(canonical_json(table[f"{row['entity']}_id"].tolist()))
+            != row.get("entity_ids_sha256")
+            or sha256_text(canonical_json(table[row["name"]].tolist()))
+            != row.get("values_sha256")
+        ):
+            raise ValueError(
+                "Calibration preparation inventory differs from the problem population."
+            )
+    return {
+        "reference_resolution": resolution,
+        "preparation_sha256": sha256_text(artifact.payload),
+        "preparation_artifact_key": artifact.key,
+        **expected,
+    }
+
+
 class TargetsCompileKernel(KernelBase):
     """``targets.compile@1``: references plus facts become a target surface."""
 
@@ -436,7 +705,9 @@ class TargetsCompileKernel(KernelBase):
         seed_source=SeedSource.NONE,
     )
     _required = frozenset({"country", "references", "references_sha256"})
-    _optional = frozenset({"facts_sha256", "chronicle_feed_pin"})
+    _optional = frozenset(
+        {"facts_sha256", "chronicle_feed_pin", "reference_resolution"}
+    )
 
     def implementation_hash(self) -> str:
         return source_hash(
@@ -458,6 +729,15 @@ def run(self, context: KernelContext) -> KernelResult:
                 "registry_version": registry.version,
                 "n_targets": len(registry.specs),
                 "surface_sha256": sha256_text(payload),
+                **(
+                    {
+                        "reference_resolution": json.loads(payload)[
+                            "reference_resolution"
+                        ]
+                    }
+                    if "reference_resolution" in context.params
+                    else {}
+                ),
             },
         )
 
@@ -498,6 +778,7 @@ def run(self, context: KernelContext) -> KernelResult:
                 "under the alias 'surface'."
             )
         surface = decode_target_surface(value.payload)
+        preparation = _preparation_binding(context, surface)
         frame = context_frame(
             context, self.ref, entities=entities, weight_entity=weight_entity
         )
@@ -526,6 +807,7 @@ def run(self, context: KernelContext) -> KernelResult:
                 "surface_sha256": surface.sha256,
                 "entities": list(entities),
                 "weight_entity": weight_entity,
+                **preparation,
             },
         )
         return KernelResult(
@@ -537,6 +819,7 @@ def run(self, context: KernelContext) -> KernelResult:
                 "n_targets": int(problem.n_targets),
                 "n_records": int(problem.n_weights),
                 "weight_kind": problem.initial_weights.kind.value,
+                **preparation,
             },
         )
 
@@ -554,7 +837,9 @@ class TakeupCompareKernel(KernelBase):
     _required = frozenset(
         {"country", "references", "references_sha256", "entities", "weight_entity"}
     )
-    _optional = frozenset({"facts_sha256", "chronicle_feed_pin"})
+    _optional = frozenset(
+        {"facts_sha256", "chronicle_feed_pin", "reference_resolution"}
+    )
 
     def implementation_hash(self) -> str:
         return source_hash(
@@ -631,6 +916,7 @@ def run(self, context: KernelContext) -> KernelResult:
 
 
 TARGETS_COMPILE = TargetsCompileKernel()
+CALIBRATION_PREPARE = CalibrationPrepareKernel()
 TARGETS_PROBLEM = TargetsProblemKernel()
 TAKEUP_COMPARE = TakeupCompareKernel()
 
@@ -638,5 +924,10 @@ def run(self, context: KernelContext) -> KernelResult:
 def register_target_kernels(registry: KernelRegistry) -> None:
     """Register the three kernels; repeating the call is a no-op."""
 
-    for kernel in (TARGETS_COMPILE, TARGETS_PROBLEM, TAKEUP_COMPARE):
+    for kernel in (
+        CALIBRATION_PREPARE,
+        TARGETS_COMPILE,
+        TARGETS_PROBLEM,
+        TAKEUP_COMPARE,
+    ):
         registry.register(kernel)
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_calibration_columns.py b/packages/microcosm-build/tests/engine_free/shared/test_calibration_columns.py
index 9949542311..c3eda2039d 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_calibration_columns.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_calibration_columns.py
@@ -12,7 +12,8 @@
 from hypothesis import strategies as st
 
 from microcosm.build.calibration_columns import prepare_calibration_columns
-from microcosm.build.country_spec import load_country_spec
+from microcosm.build.country_spec import _validate_target_references
+from microcosm.build.reference_profiles import resolve_reference_profiles
 from microcosm.calibrate import Target, TargetSet
 from microcosm.calibrate.matrix import build_constraint_matrix
 from microcosm.frame import EntitySchema, Frame, WeightKind, Weights
@@ -57,6 +58,18 @@ def _frame(tables):
     )
 
 
+def _replace_people(tables, ages):
+    tables["household"] = tables["household"].iloc[:1].copy()
+    tables["person"] = pd.DataFrame(
+        {
+            "person_id": range(len(ages)),
+            "person_household_id": [0] * len(ages),
+            "age": ages,
+            "region_code": ["01"] * len(ages),
+        }
+    )
+
+
 def test_prepared_columns_partition_age_and_canonical_tenure_on_a_real_frame():
     tables = _tables()
     prepared = prepare_calibration_columns(tables, _bindings())
@@ -95,7 +108,7 @@ def test_prepared_columns_partition_age_and_canonical_tenure_on_a_real_frame():
 @given(st.lists(st.integers(min_value=0, max_value=200), min_size=1, max_size=30))
 def test_nonnegative_integer_ages_have_exactly_one_declared_band(ages):
     tables = _tables()
-    tables["person"] = pd.DataFrame({"age": ages, "region_code": ["01"] * len(ages)})
+    _replace_people(tables, ages)
     person = prepare_calibration_columns(tables, _bindings())["person"]
     indicators = [
         f"population_region_01_age_{band}_indicator"
@@ -155,7 +168,7 @@ def test_stale_indicators_are_recomputed_after_inputs_change():
 def test_receipt_age_indicators_retain_the_published_strata_boundaries():
     tables = _tables()
     ages = [17, 18, 24, 25, 39, 40, 54, 55, 64, 65]
-    tables["person"] = pd.DataFrame({"age": ages, "region_code": ["01"] * len(ages)})
+    _replace_people(tables, ages)
     person = prepare_calibration_columns(tables, _bindings())["person"]
     for code, positions in (
         ("18_24", [1, 2]),
@@ -168,9 +181,15 @@ def test_receipt_age_indicators_retain_the_published_strata_boundaries():
 
 def test_all_active_calibration_bindings_enter_the_small_frame_matrix():
     frame = _frame(prepare_calibration_columns(_tables(), _bindings()))
+    root = paths_for("microcosm-build").package / "src/microcosm/build/nz"
+    effective, _, _ = resolve_reference_profiles(
+        json.loads((root / "target_references.json").read_text()),
+        json.loads((root / "reference_profiles.json").read_text()),
+        {},
+    )
     references = [
         ref
-        for ref in load_country_spec("nz").target_references
+        for ref in _validate_target_references(effective, country="nz")
         if ref.metadata["activation_status"] == "active"
     ]
     # Synthetic positive right-hand sides isolate column readiness; the public
@@ -188,7 +207,97 @@ def test_all_active_calibration_bindings_enter_the_small_frame_matrix():
     )
     problem = build_constraint_matrix(frame, targets, "household")
     assert not problem.skipped
-    assert len(problem.names) == len(references) == 98
+    assert len(problem.names) == len(references) == 234
+
+
+def test_household_size_indicators_partition_all_regions_and_include_nine_people():
+    bindings = _bindings()
+    regions = bindings["input_domains"]["household"]["household_region_code"]["values"]
+    sizes = list(range(1, 10)) * len(regions)
+    household_regions = [region for region in regions for _ in range(9)]
+    memberships = [index for index, size in enumerate(sizes) for _ in range(size)]
+    tables = {
+        "household": pd.DataFrame(
+            {
+                "household_id": range(len(sizes)),
+                "household_region_code": household_regions,
+                "tenure": [TENURE_DOMAIN[0]] * len(sizes),
+            }
+        ),
+        "person": pd.DataFrame(
+            {
+                "person_id": range(len(memberships)),
+                "person_household_id": memberships,
+                "age": [30] * len(memberships),
+                "region_code": [household_regions[index] for index in memberships],
+            }
+        ),
+    }
+    prepared = prepare_calibration_columns(tables, bindings)["household"]
+    columns = [row["name"] for row in bindings["columns"] if "_size_" in row["name"]]
+    assert len(columns) == 136
+    assert prepared["household_size"].tolist() == sizes
+    np.testing.assert_array_equal(prepared[columns].sum(axis=1), np.ones(len(sizes)))
+    for region in regions:
+        eight_plus = prepared[f"household_region_{region}_size_8_indicator"]
+        assert eight_plus.sum() == 2
+
+
+@pytest.mark.parametrize(
+    "defect",
+    [
+        "duplicate_household",
+        "duplicate_person",
+        "duplicate_boxed_person",
+        "orphan",
+        "empty",
+        "missing",
+        "missing_person",
+        "missing_household",
+        "blank",
+        "wrong_type",
+    ],
+)
+def test_household_roster_refuses_invalid_membership(defect):
+    tables = _tables()
+    if defect == "duplicate_household":
+        tables["household"].loc[1, "household_id"] = 0
+    elif defect == "duplicate_person":
+        tables["person"].loc[1, "person_id"] = 0
+    elif defect == "duplicate_boxed_person":
+        tables["person"]["person_id"] = tables["person"]["person_id"].astype(object)
+        tables["person"].loc[1, "person_id"] = np.int64(0)
+    elif defect == "orphan":
+        tables["person"].loc[0, "person_household_id"] = 999
+    elif defect == "empty":
+        tables["person"] = tables["person"].loc[
+            lambda rows: rows.person_household_id != 5
+        ]
+    elif defect in {"missing", "missing_person", "missing_household", "blank"}:
+        entity, column = {
+            "missing": ("person", "person_household_id"),
+            "missing_person": ("person", "person_id"),
+            "missing_household": ("household", "household_id"),
+            "blank": ("person", "person_household_id"),
+        }[defect]
+        tables[entity][column] = tables[entity][column].astype(object)
+        tables[entity].loc[0, column] = "" if defect == "blank" else None
+    else:
+        tables["person"]["person_household_id"] = tables["person"][
+            "person_household_id"
+        ].astype(object)
+        tables["person"].loc[0, "person_household_id"] = "0"
+    with pytest.raises(ValueError, match="missing values|identit|orphan|empty"):
+        prepare_calibration_columns(tables, _bindings())
+
+
+def test_prepared_columns_cannot_overwrite_a_validated_roster_count():
+    bindings = _bindings()
+    bindings["columns"].append(
+        {"entity": "household", "name": "household_size", "constant": 8}
+    )
+    with pytest.raises(ValueError, match="repeated or structural"):
+        prepare_calibration_columns(_tables(), bindings)
 
 
 def test_family_multiplicity_is_a_measure_while_nucleus_activation_stays_blocked():
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
new file mode 100644
index 0000000000..3475a4d882
--- /dev/null
+++ b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
@@ -0,0 +1,672 @@
+"""Country-neutral exact partitions and proportional residual allocation."""
+
+from __future__ import annotations
+
+import json
+import math
+from copy import deepcopy
+from dataclasses import replace
+from fractions import Fraction
+
+import pytest
+from hypothesis import HealthCheck, given, settings
+from hypothesis import strategies as st
+
+from microcosm.build.ledger_targets import (
+    LedgerTargetReference,
+    compile_ledger_target_references,
+    fact_matches_selector,
+    reference_fact_selectors,
+    target_spec_from_ledger_reference,
+)
+
+DIMENSION = "census.partition_member"
+
+
+def _fact(key, value, member=None, *, period=2023, growth=False, geography="01"):
+    return {
+        "aggregate_fact_key": f"fact:{key}",
+        "value": value,
+        "period": {"type": "calendar_year", "value": period},
+        "geography": {"level": "region", "id": geography, "vintage": "current"},
+        "entity": {"name": "person" if growth else "household"},
+        "aggregation": {"method": "sum"},
+        "source": {"source_name": "publisher", "source_sha256": "a" * 64},
+        "source_release_key": "release:one",
+        "observed_measure": {
+            "source_measure_id": "population" if growth else "count",
+            "source_concept": "population" if growth else "households",
+        },
+        "layout": {
+            "record_set_id": "population"
+            if growth
+            else "total"
+            if member is None
+            else "partition"
+        },
+        "dimensions": {} if member is None else {DIMENSION: member},
+        "universe_constraints": {"domain": "people" if growth else "households"},
+    }
+
+
+def _selector(fact):
+    result = {
+        "aggregate_fact_key": fact["aggregate_fact_key"],
+        "source_name": fact["source"]["source_name"],
+        "source_measure_id": fact["observed_measure"]["source_measure_id"],
+        "source_concept": fact["observed_measure"]["source_concept"],
+        "entity_name": fact["entity"]["name"],
+        "record_set_id": fact["layout"]["record_set_id"],
+        "period_type": fact["period"]["type"],
+        "period_value": fact["period"]["value"],
+        "geography_level": fact["geography"]["level"],
+        "geography_id": fact["geography"]["id"],
+        "geography_vintage": fact["geography"]["vintage"],
+        "dimensions": list(fact["dimensions"]),
+    }
+    if fact["dimensions"]:
+        result["dimension_values"] = dict(fact["dimensions"])
+    return result
+
+
+def _case(
+    counts=(72, 87, 24, 24, 9, 6, 3, 0),
+    residual=15,
+    recipients=None,
+    group=(1,),
+    growth=True,
+):
+    atoms = [
+        _fact(f"atom:{index}", value, index) for index, value in enumerate(counts, 1)
+    ]
+    total = _fact("total", math.fsum(counts) + residual)
+    recipients = tuple(range(1, len(counts) + 1)) if recipients is None else recipients
+    selector = _selector(atoms[group[0] - 1])
+    if len(group) > 1:
+        selector.pop("aggregate_fact_key")
+        selector["dimension_values"] = {DIMENSION: list(group)}
+    operands = [
+        {"role": "base", "expected_member_count": len(group)},
+        {"role": "total", **_selector(total)},
+        {
+            "role": "partition",
+            "member_selectors": [_selector(fact) for fact in atoms],
+            "allocation_member_keys": [
+                atoms[index - 1]["aggregate_fact_key"] for index in recipients
+            ],
+        },
+    ]
+    facts = [*atoms, total]
+    if growth:
+        for role, period, value in (
+            ("numerator", 2025, 109),
+            ("denominator", 2023, 100),
+        ):
+            fact = _fact(role, value, period=period, growth=True)
+            operands.append({"role": role, **_selector(fact)})
+            facts.append(fact)
+    reference = LedgerTargetReference(
+        name="allocated group",
+        ledger_selector=selector,
+        value_operation="allocated_residual_by_ratio",
+        value_operands=tuple(operands),
+        entity="household",
+        measure="indicator",
+        period=2025 if growth else 2023,
+        metadata={
+            "allocation_ruling": "reviewed-convention",
+            "census_residual_allocation": "proportional",
+        },
+    )
+    return facts, reference
+
+
+def _compile(facts, reference, direct=False):
+    if direct:
+        return target_spec_from_ledger_reference(tuple(facts), reference)
+    return compile_ledger_target_references(
+        facts, [reference], country="fixture"
+    ).specs[0]
+
+
+@pytest.mark.parametrize("growth", [False, True])
+def test_mar_closes_preserves_shares_zero_leaves_and_applies_growth_once(growth):
+    counts = (72, 87, 24, 24, 9, 6, 3, 0)
+    values = [
+        _compile(*_case(counts, group=(index,), growth=growth)).value
+        for index in range(1, 9)
+    ]
+    ratio = 109 / 100 if growth else 1
+    assert math.isclose(math.fsum(values), 240 * ratio, rel_tol=1e-12, abs_tol=1e-7)
+    assert values[0] == pytest.approx(76.8 * ratio, rel=1e-12, abs=1e-7)
+    assert values[-1] == 0
+    for i in range(8):
+        for j in range(8):
+            assert values[i] * counts[j] == pytest.approx(
+                values[j] * counts[i], rel=1e-12, abs=1e-7
+            )
+
+
+def test_sensitivity_exact_recipients_and_increment_ratio():
+    counts = (72, 87, 24, 24, 9, 6, 3, 0)
+    small = [
+        _compile(*_case(counts, recipients=(1, 2), group=(i,), growth=False)).value
+        for i in range(1, 9)
+    ]
+    mar = [
+        _compile(*_case(counts, group=(i,), growth=False)).value for i in range(1, 9)
+    ]
+    assert small[:2] == pytest.approx([78.79245283018868, 95.20754716981132])
+    assert small[2:] == list(counts[2:])
+    assert all(small[i] < mar[i] for i in range(2, 7))
+    assert math.isclose(math.fsum(small), 240, rel_tol=1e-12, abs_tol=1e-7)
+    assert (small[0] - counts[0]) * counts[1] == pytest.approx(
+        (small[1] - counts[1]) * counts[0]
+    )
+
+
+def test_grouping_preserves_the_third_atomic_member():
+    facts, reference = _case((41, 19, 7), 3, group=(1, 3))
+    value = _compile(facts, reference).value
+    assert value == pytest.approx(
+        float(Fraction(48) * Fraction(70, 67) * Fraction(109, 100))
+    )
+    singleton_sum = math.fsum(
+        _compile(*_case((41, 19, 7), 3, group=(i,))).value for i in (1, 3)
+    )
+    assert value == pytest.approx(singleton_sum)
+
+
+def test_receipt_labels_keys_and_preserves_base_geography_and_raw_facts():
+    facts, reference = _case()
+    before = deepcopy(facts)
+    spec = _compile(facts, reference)
+    receipt = json.loads(spec.metadata["ledger_allocation_receipt"])
+    assert receipt["operation"] == "allocated_residual_by_ratio"
+    assert receipt["ruling"] == "reviewed-convention"
+    assert receipt["selected_profile"] == "proportional"
+    assert receipt["T"] == 240 and receipt["L"] == 225 and receipt["R"] == 15
+    assert receipt["B"] == 72 and receipt["A"] == 225 and receipt["W"] == 72
+    assert receipt["allocated_increment"] == pytest.approx(4.8)
+    assert receipt["Q"] == 1.09 and receipt["N"] == 109 and receipt["D"] == 100
+    assert receipt["zero_residual"] is False
+    assert receipt["source_period"] == 2023 and receipt["target_period"] == 2025
+    assert receipt["final_target"] == spec.value
+    assert set(receipt["member_digests"]) == {"base", "partition", "recipients"}
+    assert spec.metadata["ledger_geography_id"] == "01"
+    assert facts == before
+
+
+def test_prefilter_keeps_every_auxiliary_selector_and_unrelated_rows_are_inert():
+    facts, reference = _case(group=(1, 3))
+    unrelated = _fact("unrelated", 1_000_000, 1, geography="02")
+    selectors = reference_fact_selectors(reference)
+    filtered = [
+        fact
+        for fact in [*reversed(facts), unrelated]
+        if any(fact_matches_selector(fact, selector) for selector in selectors)
+    ]
+    assert len(filtered) == len(facts)
+    assert _compile(filtered, reference).value == _compile(facts, reference).value
+    operands = deepcopy(reference.value_operands)
+    operands[2]["member_selectors"].reverse()
+    operands[2]["allocation_member_keys"].reverse()
+    reordered = replace(reference, value_operands=operands)
+    assert (
+        _compile(filtered, reordered).metadata["ledger_allocation_receipt"]
+        == _compile(facts, reference).metadata["ledger_allocation_receipt"]
+    )
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize(
+    "change",
+    [
+        "missing",
+        "duplicate",
+        "substituted",
+        "string",
+        "float",
+        "wrong_universe",
+        "wrong_snapshot",
+        "wrong_period",
+        "negative",
+        "nonfinite",
+    ],
+)
+def test_refuses_invalid_atomic_partitions_on_both_compilation_paths(change, direct):
+    facts, reference = _case((41, 19, 7), 3, group=(1, 3))
+    if change == "missing":
+        facts.pop(2)
+    elif change == "duplicate":
+        facts.append(deepcopy(facts[2]))
+    elif change == "substituted":
+        original_value = facts[2]["value"]
+        facts[2] = deepcopy(facts[0])
+        facts[2]["value"] = original_value
+        facts[2]["aggregate_fact_key"] = "fact:atom:3"
+    elif change in {"string", "float"}:
+        facts[2]["dimensions"][DIMENSION] = "3" if change == "string" else 3.0
+    elif change == "wrong_universe":
+        facts[3]["universe_constraints"]["domain"] = "families"
+    elif change == "wrong_snapshot":
+        facts[2]["source_release_key"] = "release:other"
+    elif change == "wrong_period":
+        facts[2]["period"]["value"] = 2024
+    else:
+        facts[2]["value"] = -1 if change == "negative" else math.nan
+    with pytest.raises(ValueError):
+        _compile(facts, reference, direct)
+
+
+def test_indexed_catalog_resolution_preserves_duplicate_occurrences_outside_base():
+    facts, reference = _case((41, 19, 7), residual=3, group=(1,), growth=False)
+    facts.append(facts[2])
+    with pytest.raises(ValueError, match="selector must resolve exactly once, got 2"):
+        _compile(facts, reference)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize(
+    "predicate", ["range", "different_equality", "wrong_typed_equality", "other_role"]
+)
+def test_partition_dimension_filters_cannot_change_the_total_universe(
+    predicate, direct
+):
+    facts, reference = _case((0, 3, 5), residual=2, group=(2,), growth=False)
+    for code, fact in enumerate(facts[:3], 1):
+        cell = {
+            "variable": DIMENSION,
+            "operator": "==",
+            "value": code,
+            "role": "filter",
+        }
+        extra = dict(cell)
+        if predicate == "range":
+            extra.update(operator=">=", value=2)
+        elif predicate == "different_equality":
+            extra["value"] = code + 1
+        elif predicate == "wrong_typed_equality":
+            extra["value"] = float(code)
+        else:
+            extra["role"] = "measure"
+        fact["universe_constraints"]["constraints"] = [cell, extra]
+    with pytest.raises(ValueError, match="count universe"):
+        _compile(facts, reference, direct)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+def test_only_exact_typed_category_equalities_are_removed_from_universe(direct):
+    facts, reference = _case((0, 3, 5), residual=2, group=(2,), growth=False)
+    for code, fact in enumerate(facts[:3], 1):
+        fact["universe_constraints"]["constraints"] = [
+            {"variable": DIMENSION, "operator": "==", "value": code, "role": "filter"}
+        ]
+    assert _compile(facts, reference, direct).value == pytest.approx(3.75)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize(
+    "roster,count",
+    [([1, 3, 4], 2), ([1, "3"], 1), ([1, 3, 4], 3), ([1, "3"], 2), ([1, 3], 1)],
+)
+def test_declared_base_roster_must_match_its_count_and_partition(roster, count, direct):
+    facts, reference = _case((41, 19, 7), residual=3, group=(1, 3))
+    # Simulate a direct caller supplying an already-created, subsequently
+    # altered declaration; compilation must repeat the constructor's guards.
+    reference.ledger_selector["dimension_values"][DIMENSION] = roster
+    reference.value_operands[0]["expected_member_count"] = count
+    with pytest.raises(ValueError, match="typed roster"):
+        _compile(facts, reference, direct)
+
+
+def test_constructor_rejects_base_roster_members_outside_partition():
+    _, reference = _case((41, 19, 7), residual=3, group=(1, 3))
+    selector = deepcopy(reference.ledger_selector)
+    selector["dimension_values"][DIMENSION] = [1, "3"]
+    with pytest.raises(ValueError, match="typed roster"):
+        replace(reference, ledger_selector=selector)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+def test_negative_residual_is_refused_without_clipping(direct):
+    with pytest.raises(ValueError, match="negative.*residual"):
+        _compile(*_case(residual=-1), direct)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+def test_zero_residual_with_zero_recipient_mass_is_identity(direct):
+    facts, reference = _case((0, 0, 7), residual=0, recipients=(1, 2), group=(3,))
+    spec = _compile(facts, reference, direct)
+    assert spec.value == pytest.approx(7 * 109 / 100)
+    assert (
+        json.loads(spec.metadata["ledger_allocation_receipt"])["zero_residual"] is True
+    )
+
+
+def test_positive_residual_with_zero_recipient_mass_refuses():
+    with pytest.raises(ValueError, match="positive recipient mass"):
+        _compile(*_case((0, 0, 7), recipients=(1, 2)))
+
+
+@pytest.mark.parametrize("direct", [False, True])
+def test_future_count_period_cannot_bypass_consumer_period_policy(direct):
+    facts, reference = _case(growth=False)
+    reference = replace(reference, period=2022)
+    with pytest.raises(ValueError, match="at or before target period"):
+        _compile(facts, reference, direct)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize(
+    "marker",
+    [
+        {},
+        {"reference_profiles_resolved": "1"},
+        {"reference_selection_sha256": "a" * 64},
+    ],
+)
+def test_raw_reference_profile_requirement_cannot_be_promoted_by_status(direct, marker):
+    facts, reference = _case()
+    reference = replace(
+        reference,
+        metadata={
+            "activation_status": "active",
+            "required_reference_profile": "allocation",
+            **marker,
+        },
+    )
+    with pytest.raises(ValueError, match="requires reference profile resolution"):
+        _compile(facts, reference, direct)
+
+
+def test_total_and_atoms_require_same_typed_shared_dimension_values():
+    _, reference = _case()
+    operands = deepcopy(reference.value_operands)
+    operands[1]["dimensions"] = ["sex"]
+    operands[1]["dimension_values"] = {"sex": "F"}
+    for selector in operands[2]["member_selectors"]:
+        selector["dimensions"].append("sex")
+        selector["dimension_values"]["sex"] = "M"
+    with pytest.raises(ValueError, match="shared total dimension values"):
+        replace(reference, value_operands=operands)
+
+
+@pytest.mark.parametrize(
+    "change",
+    [
+        "unpaired",
+        "outside_recipient",
+        "total_in_partition",
+        "duplicate_partition",
+        "duplicate_cell_other_record_set",
+        "missing_pin",
+    ],
+)
+def test_reference_contract_refuses_unpaired_or_malformed_operands(change):
+    _, reference = _case()
+    operands = deepcopy(reference.value_operands)
+    if change == "unpaired":
+        operands = operands[:-1]
+    elif change == "outside_recipient":
+        operands[2]["allocation_member_keys"].append("fact:outside")
+    elif change == "total_in_partition":
+        _allocation_total = {
+            key: value for key, value in operands[1].items() if key != "role"
+        }
+        operands[2]["member_selectors"].append(_allocation_total)
+        operands[2]["allocation_member_keys"].append(
+            _allocation_total["aggregate_fact_key"]
+        )
+    elif change == "duplicate_partition":
+        operands[2]["member_selectors"][1] = deepcopy(
+            operands[2]["member_selectors"][0]
+        )
+    elif change == "duplicate_cell_other_record_set":
+        selector = operands[2]["member_selectors"][1]
+        selector["record_set_id"] = "another.table"
+        selector["dimension_values"] = deepcopy(
+            operands[2]["member_selectors"][0]["dimension_values"]
+        )
+    else:
+        del operands[2]["member_selectors"][0]["record_set_id"]
+    with pytest.raises(ValueError):
+        replace(reference, value_operands=operands)
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize(
+    "change",
+    [
+        "zero_denominator",
+        "negative_denominator",
+        "low_ratio",
+        "high_ratio",
+        "wrong_series",
+        "wrong_period",
+        "undeclared_proxy",
+    ],
+)
+def test_growth_operand_refusals_on_both_paths(change, direct):
+    facts, reference = _case()
+    if change == "zero_denominator":
+        facts[-1]["value"] = 0
+    elif change == "negative_denominator":
+        facts[-1]["value"] = -1
+    elif change == "low_ratio":
+        facts[-2]["value"] = 50
+    elif change == "high_ratio":
+        facts[-2]["value"] = 201
+    else:
+        operands = deepcopy(reference.value_operands)
+        if change == "wrong_series":
+            facts[-1]["entity"]["name"] = "different_entity"
+            operands[-1]["entity_name"] = "different_entity"
+        elif change == "wrong_period":
+            facts[-1]["period"]["value"] = 2024
+            operands[-1]["period_value"] = 2024
+        else:
+            for fact, operand in zip(facts[-2:], operands[-2:], strict=True):
+                fact["geography"]["id"] = "all"
+                operand["geography_id"] = "all"
+        reference = replace(reference, value_operands=operands)
+    with pytest.raises(ValueError):
+        _compile(facts, reference, direct)
+
+
+def test_explicit_proxy_preserves_output_geography():
+    facts, reference = _case()
+    operands = deepcopy(reference.value_operands)
+    for fact, operand in zip(facts[-2:], operands[-2:], strict=True):
+        fact["geography"]["id"] = "all"
+        operand["geography_id"] = "all"
+    reference = replace(
+        reference,
+        value_operands=operands,
+        metadata={"growth_geography_proxy": "declared wider-area growth"},
+    )
+    spec = _compile(facts, reference)
+    assert spec.metadata["ledger_geography_id"] == "01"
+    assert json.loads(spec.metadata["ledger_allocation_receipt"])["Q"] == 1.09
+
+
+@pytest.mark.parametrize("direct", [False, True])
+@pytest.mark.parametrize("denominator_role", ["total", "atom"])
+def test_growth_roles_may_reuse_total_or_atom_without_double_counting(
+    direct, denominator_role
+):
+    facts, reference = _case(growth=False)
+    denominator = facts[-1] if denominator_role == "total" else facts[0]
+    numerator = deepcopy(denominator)
+    numerator["aggregate_fact_key"] = "fact:later_count"
+    numerator["period"]["value"] = 2025
+    numerator["value"] *= 1.1
+    facts.append(numerator)
+    reference = replace(
+        reference,
+        period=2025,
+        value_operands=(
+            *reference.value_operands,
+            {"role": "numerator", **_selector(numerator)},
+            {"role": "denominator", **_selector(denominator)},
+        ),
+    )
+    spec = _compile(facts, reference, direct)
+    assert spec.value == pytest.approx(76.8 * 1.1)
+    receipt = json.loads(spec.metadata["ledger_allocation_receipt"])
+    assert receipt["L"] == 225 and receipt["T"] == 240
+    assert receipt["fact_keys"]["denominator"] == denominator["aggregate_fact_key"]
+    keys = json.loads(spec.metadata["ledger_member_fact_keys"])
+    assert len(keys) == len(set(keys)) == len(facts)
+    # The same declared role overlap cannot excuse duplicate source atoms.
+    with pytest.raises(ValueError, match="exactly once|multiple Ledger facts"):
+        _compile([*facts, deepcopy(facts[0])], reference, direct)
+
+
+# Cold local-constant discovery on the shared build machine can dominate data
+# generation; retain every generated example and numerical assertion.
+@settings(
+    max_examples=100,
+    deadline=None,
+    database=None,
+    suppress_health_check=[HealthCheck.too_slow],
+)
+@given(
+    counts=st.lists(st.integers(0, 100_000), min_size=1, max_size=8),
+    residual=st.integers(0, 10_000),
+    recipient_mask=st.integers(1, 255),
+    group_mask=st.integers(1, 255),
+    numerator=st.integers(51, 200),
+)
+def test_exact_rational_oracle_for_partitions_recipients_groups_and_growth(
+    counts, residual, recipient_mask, group_mask, numerator
+):
+    recipients = tuple(
+        i for i in range(1, len(counts) + 1) if recipient_mask & (1 << (i - 1))
+    ) or (1,)
+    group = tuple(
+        i for i in range(1, len(counts) + 1) if group_mask & (1 << (i - 1))
+    ) or (1,)
+    mass = sum(counts[i - 1] for i in recipients)
+    facts, reference = _case(counts, residual, recipients, group)
+    facts[-2]["value"] = numerator
+    if residual and not mass:
+        with pytest.raises(ValueError, match="positive recipient mass"):
+            _compile(facts, reference)
+        return
+    base = sum(counts[i - 1] for i in group)
+    weight = sum(counts[i - 1] for i in group if i in recipients)
+    allocated = Fraction(base) + (Fraction(residual * weight, mass) if residual else 0)
+    expected = allocated * Fraction(numerator, 100)
+    value = _compile(
+        [*reversed(facts), _fact("other", 999, 1, geography="02")], reference
+    ).value
+    assert math.isclose(value, float(expected), rel_tol=1e-12, abs_tol=1e-7)
+    # The generated group and its complement form an exact output partition.
+    complement = tuple(i for i in range(1, len(counts) + 1) if i not in group)
+    partition_values = [value]
+    if complement:
+        other_facts, other_reference = _case(counts, residual, recipients, complement)
+        other_facts[-2]["value"] = numerator
+        other_value = _compile(other_facts, other_reference).value
+        other_base = sum(counts[i - 1] for i in complement)
+        other_weight = sum(counts[i - 1] for i in complement if i in recipients)
+        other_oracle = (
+            Fraction(other_base)
+            + (Fraction(residual * other_weight, mass) if residual else 0)
+        ) * Fraction(numerator, 100)
+        assert math.isclose(
+            other_value, float(other_oracle), rel_tol=1e-12, abs_tol=1e-7
+        )
+        partition_values.append(other_value)
+    assert math.isclose(
+        math.fsum(partition_values),
+        float(Fraction(sum(counts) + residual) * Fraction(numerator, 100)),
+        rel_tol=1e-12,
+        abs_tol=1e-7,
+    )
+    # Scaling the Census total and leaves commutes with allocation. The
+    # separate growth pair is omitted on this path so scaling happens once.
+    scaled_facts, scaled_reference = _case(
+        [Fraction(x * numerator, 100) for x in counts],
+        Fraction(residual * numerator, 100),
+        recipients,
+        group,
+        growth=False,
+    )
+    assert math.isclose(
+        _compile(scaled_facts, scaled_reference).value,
+        value,
+        rel_tol=1e-12,
+        abs_tol=1e-7,
+    )
+
+
+@settings(
+    max_examples=50,
+    deadline=None,
+    database=None,
+    suppress_health_check=[HealthCheck.too_slow],
+)
+@given(
+    counts=st.lists(st.integers(0, 100_000), min_size=2, max_size=8),
+    residual=st.integers(0, 10_000),
+    change=st.sampled_from(
+        (
+            "missing",
+            "duplicate",
+            "substitution",
+            "type",
+            "recipient_outside",
+            "total_universe",
+            "period",
+            "vintage",
+            "snapshot",
+            "negative_residual",
+            "nonfinite",
+            "unpaired_growth",
+            "wrong_growth_series",
+            "growth_bounds",
+        )
+    ),
+    direct=st.booleans(),
+)
+def test_generated_invalid_partition_rosters_refuse(counts, residual, change, direct):
+    facts, reference = _case(counts, residual)
+    with pytest.raises(ValueError):
+        if change == "missing":
+            facts.pop(1)
+        elif change == "duplicate":
+            facts.insert(1, deepcopy(facts[1]))
+        elif change == "substitution":
+            facts[1]["dimensions"][DIMENSION] = 1
+        elif change == "type":
+            facts[1]["dimensions"][DIMENSION] = 2.0
+        elif change == "recipient_outside":
+            operands = deepcopy(reference.value_operands)
+            operands[2]["allocation_member_keys"] = ["fact:outside"]
+            reference = replace(reference, value_operands=operands)
+        elif change == "total_universe":
+            facts[len(counts)]["universe_constraints"]["domain"] = "other_universe"
+        elif change == "period":
+            facts[1]["period"]["value"] = 2024
+        elif change == "vintage":
+            facts[1]["geography"]["vintage"] = "another_vintage"
+        elif change == "snapshot":
+            facts[1]["source_release_key"] = "release:other"
+        elif change == "negative_residual":
+            if not sum(counts):
+                facts[0]["value"] = 1
+            facts[len(counts)]["value"] = max(0, sum(counts) - 1)
+        elif change == "nonfinite":
+            facts[1]["value"] = math.inf
+        elif change == "unpaired_growth":
+            reference = replace(reference, value_operands=reference.value_operands[:-1])
+        elif change == "wrong_growth_series":
+            operands = deepcopy(reference.value_operands)
+            operands[-1]["entity_name"] = "another_entity"
+            facts[-1]["entity"]["name"] = "another_entity"
+            reference = replace(reference, value_operands=operands)
+        else:
+            facts[-2]["value"] = 301
+        _compile(facts, reference, direct)
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_nz_spec_package.py b/packages/microcosm-build/tests/engine_free/shared/test_nz_spec_package.py
index 30dec5374f..7e9fba0e58 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_nz_spec_package.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_nz_spec_package.py
@@ -1193,7 +1193,7 @@ def test_each_set_is_a_self_identifying_nz_reference_resource(
         assert document["country"] == "nz"
         assert document["reference_set"] == reference_set
         expected_operations = (
-            ["identity", "rolled_forward_by_ratio"]
+            ["identity", "rolled_forward_by_ratio", "allocated_residual_by_ratio"]
             if reference_set == "calibration"
             else ["identity"]
         )
@@ -1236,7 +1236,7 @@ def test_every_parked_reference_names_its_blocker_and_refuses_compilation(
                 compile_ledger_target_references([], [reference], country="nz")
         assert (
             sum(row.metadata["activation_status"] == "active" for row in references)
-            == {"calibration": 98, "precal": 67, "holdout": 0}[reference_set]
+            == {"calibration": 64, "precal": 67, "holdout": 0}[reference_set]
         )
 
     def test_pre_calibration_rows_are_not_weight_calibration_targets(self) -> None:
@@ -2199,6 +2199,7 @@ def test_committed_grid_satisfies_the_scenario_contract(self) -> None:
             "V1",
             "V2",
             "V3",
+            "V4",
         ]
         branch_points = {
             tier: row["branch_point"] for tier, row in document["tiers"].items()
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_nz_target_references.py b/packages/microcosm-build/tests/engine_free/shared/test_nz_target_references.py
index f40f6a0c18..004785b9e9 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_nz_target_references.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_nz_target_references.py
@@ -20,6 +20,13 @@
 from microcosm.build.ledger_targets import (
     compile_ledger_target_references,
     fact_matches_selector,
+    reference_fact_selectors,
+)
+from microcosm.build.reference_profiles import (
+    REFERENCE_DOCUMENT_KEYS,
+    reference_document_sha256,
+    resolve_reference_profiles,
+    validate_reference_resolution,
 )
 from microcosm.build.transport.target_kernels import parse_reference_document
 from test_support.paths import paths_for
@@ -64,6 +71,25 @@
     ("18", 50800, 50800),
     ("NZ", 5200000, 5324700),
 ]
+RESIDUALS = [
+    ("01", 70476, 66261, 4215, 70470, 6),
+    ("02", 539490, 521835, 17655, 539358, 132),
+    ("03", 177543, 170253, 7290, 177447, 96),
+    ("04", 118452, 113598, 4854, 118437, 15),
+    ("05", 17124, 16236, 888, 17124, 0),
+    ("06", 62964, 59523, 3441, 62910, 54),
+    ("07", 48108, 46329, 1779, 48090, 18),
+    ("08", 95187, 92073, 3114, 95175, 12),
+    ("09", 194406, 188772, 5634, 194370, 36),
+    ("12", 14205, 13347, 858, 14199, 6),
+    ("13", 248550, 242292, 6258, 248520, 30),
+    ("14", 91563, 89067, 2496, 91551, 12),
+    ("15", 40185, 38892, 1293, 40182, 3),
+    ("16", 21864, 21030, 834, 21864, 0),
+    ("17", 20577, 20112, 465, 20571, 6),
+    ("18", 19590, 18966, 624, 19587, 3),
+    ("99", 240, 225, 15, 240, 0),
+]
 
 
 def _document(name):
@@ -80,6 +106,15 @@ def _parsed(rows):
     )
 
 
+def _effective_rows(profile="mar"):
+    document, _, _ = resolve_reference_profiles(
+        _document("target_references.json"),
+        _document("reference_profiles.json"),
+        {"census_residual_allocation": profile, "aging_index": "central"},
+    )
+    return document["target_references"]
+
+
 def test_inventory_has_exact_contract_counts_and_named_parking_reasons():
     counts = Counter(row["metadata"]["contract_target_id"] for row in _rows())
     assert counts == {
@@ -95,7 +130,7 @@ def test_inventory_has_exact_contract_counts_and_named_parking_reasons():
     }
     assert len(_rows("precal_references.json")) == 318
     for filename, active in (
-        ("target_references.json", 98),
+        ("target_references.json", 64),
         ("precal_references.json", 67),
     ):
         rows = _rows(filename)
@@ -152,6 +187,335 @@ def test_b1_uses_only_64_all_sex_regional_age_leaves():
     }
 
 
+def test_residual_profiles_have_exact_recipient_rosters_and_preserve_other_targets():
+    raw = _rows()
+    assert len([row for row in raw if "households_by_size" in row["name"]]) == 136
+    for profile in ("mar", "small_households"):
+        effective = _effective_rows(profile)
+        assert (
+            sum(row["metadata"]["activation_status"] == "active" for row in effective)
+            == 234
+        )
+        assert {
+            row["ledger_selector"]["geography_id"]
+            for row in effective
+            if "households_by_size" in row["name"]
+        } == {*REGIONS, "99"}
+        for before, after in zip(raw, effective, strict=True):
+            if (
+                before["metadata"]["activation_status"]
+                != "requires_reference_profile_resolution"
+            ):
+                assert before == after
+                continue
+            assert before["ledger_selector"] == after["ledger_selector"]
+            assert after["metadata"]["activation_status"] == "active"
+            assert after["value_operation"] == "allocated_residual_by_ratio"
+            operands = {operand["role"]: operand for operand in after["value_operands"]}
+            partition = operands["partition"]
+            size = "households_by_size" in after["name"]
+            expected_codes = list(range(1, 9 if size else 4))
+            member_selectors = partition["member_selectors"]
+            dimension = (
+                "nz_census_2023.household_size_source_label"
+                if size
+                else "nz_census_2023.household_tenure_source_label"
+            )
+            assert [
+                selector["dimension_values"][dimension] for selector in member_selectors
+            ] == expected_codes
+            recipients = [
+                selector["dimension_values"][dimension]
+                for selector in member_selectors
+                if selector["aggregate_fact_key"] in partition["allocation_member_keys"]
+            ]
+            assert recipients == (
+                [1, 2] if size and profile == "small_households" else expected_codes
+            )
+            assert (
+                operands["total"]["geography_id"]
+                == after["ledger_selector"]["geography_id"]
+            )
+            assert operands["total"]["dimensions"] == []
+            if after["ledger_selector"]["geography_id"] == "99":
+                assert (
+                    after["metadata"]["growth_geography_proxy"]
+                    == "national-growth proxy"
+                )
+                assert "national-growth proxy" in after["hierarchy"]["target_label"]
+            assert after["metadata"]["allocation_ruling"] == "d1886"
+            assert after["metadata"]["census_residual_allocation"] == profile
+            assert profile in after["hierarchy"]["target_label"]
+
+
+@pytest.mark.parametrize("profile", ["mar", "small_households"])
+def test_full_nz_resource_resolves_directly_to_the_strict_compiler_document(profile):
+    raw = _document("target_references.json")
+    assert {
+        "reference_set",
+        "description",
+        "allowed_value_operations",
+        "target_profile",
+    } <= set(raw)
+    effective, intervals, receipt = resolve_reference_profiles(
+        raw,
+        _document("reference_profiles.json"),
+        {"census_residual_allocation": profile, "aging_index": "central"},
+    )
+    assert intervals is None
+    assert set(effective) == set(raw) & REFERENCE_DOCUMENT_KEYS
+    references = parse_reference_document(effective, country="nz")
+    assert len(references) == 773
+    active = [
+        row for row in references if row.metadata["activation_status"] == "active"
+    ]
+    parked = [
+        row for row in references if row.metadata["activation_status"] != "active"
+    ]
+    assert len(active) == 234
+    assert len(parked) == 539
+    assert receipt["base_references_sha256"] == reference_document_sha256(raw)
+    assert receipt["effective_references_sha256"] == reference_document_sha256(
+        effective
+    )
+    assert receipt["base_references_sha256"] != receipt["effective_references_sha256"]
+    assert (
+        validate_reference_resolution(
+            effective,
+            receipt,
+            references_sha256=reference_document_sha256(effective),
+            interval_document=intervals,
+        )
+        == receipt
+    )
+    for reference in parked:
+        with pytest.raises(ValueError, match="non-executable placeholder"):
+            compile_ledger_target_references([], [reference], country="nz")
+
+
+def test_raw_tenure_and_size_cannot_bypass_profile_resolution():
+    references = _parsed(
+        [
+            row
+            for row in _rows()
+            if "households_by_size" in row["name"] or row["family"] == "housing_tenure"
+        ]
+    )
+    assert len(references) == 170
+    for reference in references:
+        with pytest.raises(ValueError, match="non-executable placeholder"):
+            compile_ledger_target_references([], [reference], country="nz")
+
+
+def test_raw_tenure_refuses_even_when_all_real_operands_are_present(artifact):
+    rows = [row for row in _rows() if row["family"] == "housing_tenure"]
+    assert len(rows) == 34
+    for reference in _parsed(rows):
+        with pytest.raises(ValueError, match="non-executable placeholder"):
+            compile_ledger_target_references(artifact.facts, [reference], country="nz")
+
+
+def test_v4_changes_only_the_residual_knob_and_prior_variants_keep_their_meaning():
+    document = _document("scenarios.json")
+    assert document["central_knobs"]["census_residual_allocation"] == "mar"
+    assert document["knob_domains"]["census_residual_allocation"] == [
+        "mar",
+        "small_households",
+    ]
+    rows = {row["id"]: row for row in document["scenarios"]}
+    assert rows["V1"]["knobs"] == {"aging_index": "low"}
+    assert rows["V2"]["knobs"] == {"aging_index": "high"}
+    assert rows["V3"]["knobs"] == {"beneficiary_assignment": "variant"}
+    assert rows["V4"]["knobs"] == {"census_residual_allocation": "small_households"}
+    assert rows["V4"]["tier"] == "calibration"
+    for scenario in rows.values():
+        knobs = {**document["central_knobs"], **scenario["knobs"]}
+        assert knobs["census_residual_allocation"] == (
+            "small_households" if scenario["id"] == "V4" else "mar"
+        )
+
+
+@pytest.mark.parametrize("profile", ["mar", "small_households"])
+def test_inventory_asserts_exact_regional_residual_table(profile):
+    receipts = [
+        row
+        for row in _document("reference_inventory.json")["regional_profile_allocations"]
+        if row["profile"] == profile
+    ]
+    actual = {}
+    for region in (*REGIONS, "99"):
+        size = next(
+            row
+            for row in receipts
+            if row["geography_id"] == region and row["table"] == "household_size"
+        )
+        tenure = next(
+            row
+            for row in receipts
+            if row["geography_id"] == region and row["table"] == "tenure"
+        )
+        actual[region] = (
+            region,
+            size["published_total"],
+            size["raw_leaf_sum"],
+            size["computed_residual"],
+            tenure["raw_leaf_sum"],
+            tenure["computed_residual"],
+        )
+        assert size["published_total"] == tenure["published_total"]
+        for receipt in (size, tenure):
+            assert math.isclose(
+                receipt["allocated_closure"],
+                receipt["published_total"],
+                rel_tol=1e-12,
+                abs_tol=1e-7,
+            )
+            assert math.isclose(
+                receipt["final_closure"],
+                receipt["published_total"] * receipt["growth_ratio"],
+                rel_tol=1e-12,
+                abs_tol=1e-7,
+            )
+            assert receipt["growth_applications"] == 1
+            assert receipt["total_selector"]["geography_id"] == region
+    assert list(actual.values()) == RESIDUALS
+    assert math.fsum(row[3] for row in actual.values()) == 61713
+    assert math.fsum(row[5] for row in actual.values()) == 429
+
+
+def test_sensitivity_removes_mar_additions_from_sizes_three_to_eight():
+    receipts = _document("reference_inventory.json")["regional_profile_allocations"]
+    for region in (*REGIONS, "99"):
+        size_rows = {
+            row["profile"]: row
+            for row in receipts
+            if row["geography_id"] == region and row["table"] == "household_size"
+        }
+        mar, small = size_rows["mar"], size_rows["small_households"]
+        assert math.fsum(small["allocated_counts"]) == pytest.approx(
+            math.fsum(mar["allocated_counts"]), rel=1e-12, abs=1e-7
+        )
+        for index in range(2, 8):
+            stated = small["allocated_counts"][index]
+            mar_increment = mar["computed_residual"] * stated / mar["raw_leaf_sum"]
+            assert mar["allocated_counts"][index] - small["allocated_counts"][
+                index
+            ] == pytest.approx(mar_increment, rel=1e-12, abs=1e-7)
+        tenure_rows = [
+            row
+            for row in receipts
+            if row["geography_id"] == region and row["table"] == "tenure"
+        ]
+        assert tenure_rows[0]["allocated_counts"] == tenure_rows[1]["allocated_counts"]
+
+
+@pytest.mark.parametrize("profile", ["mar", "small_households"])
+def test_real_artifact_regional_closure_shares_and_sensitivity(
+    artifact, facts_by_key, profile
+):
+    rows = [
+        row
+        for row in _effective_rows(profile)
+        if "households_by_size" in row["name"] or row["family"] == "housing_tenure"
+    ]
+    registry = compile_ledger_target_references(
+        artifact.facts, _parsed(rows), country="nz"
+    )
+    actual = {}
+    for row, target in zip(rows, registry.specs, strict=True):
+        assert target.hierarchy.geography.id == row["ledger_selector"]["geography_id"]
+        actual[row["name"]] = target.value
+    for (
+        region,
+        total,
+        size_sum,
+        size_residual,
+        tenure_sum,
+        tenure_residual,
+    ) in RESIDUALS:
+        for table, expected_sum, residual in (
+            ("household_size", size_sum, size_residual),
+            ("tenure", tenure_sum, tenure_residual),
+        ):
+            selected = [
+                row
+                for row in rows
+                if row["ledger_selector"]["geography_id"] == region
+                and ("households_by_size" in row["name"]) == (table == "household_size")
+            ]
+            operands = {
+                operand["role"]: operand for operand in selected[0]["value_operands"]
+            }
+            partition = operands["partition"]
+            counts = [
+                _matched(selector, facts_by_key)[0]["value"]
+                for selector in partition["member_selectors"]
+            ]
+            source_total = _matched(
+                {
+                    key: value
+                    for key, value in operands["total"].items()
+                    if key != "role"
+                },
+                facts_by_key,
+            )[0]["value"]
+            assert source_total == total
+            assert math.fsum(counts) == expected_sum
+            assert source_total - math.fsum(counts) == residual
+            num = _matched(
+                {
+                    key: value
+                    for key, value in operands["numerator"].items()
+                    if key != "role"
+                },
+                facts_by_key,
+            )[0]["value"]
+            den = _matched(
+                {
+                    key: value
+                    for key, value in operands["denominator"].items()
+                    if key != "role"
+                },
+                facts_by_key,
+            )[0]["value"]
+            ratio = num / den
+            assert math.isclose(
+                math.fsum(actual[row["name"]] for row in selected),
+                total * ratio,
+                rel_tol=1e-12,
+                abs_tol=1e-7,
+            )
+            if table == "household_size":
+                unbridged = [actual[row["name"]] / ratio for row in selected]
+                for index, (stated, allocated) in enumerate(
+                    zip(counts, unbridged, strict=True)
+                ):
+                    denominator = (
+                        math.fsum(counts[:2])
+                        if profile == "small_households"
+                        else expected_sum
+                    )
+                    increment = (
+                        residual * stated / denominator
+                        if profile == "mar" or index < 2
+                        else 0
+                    )
+                    assert allocated == pytest.approx(
+                        stated + increment, rel=1e-12, abs=1e-7
+                    )
+                    if profile == "small_households" and index >= 2:
+                        assert allocated == pytest.approx(stated, rel=1e-12, abs=1e-7)
+                if profile == "mar":
+                    for first in range(len(counts)):
+                        for second in range(len(counts)):
+                            assert unbridged[first] * counts[second] == pytest.approx(
+                                unbridged[second] * counts[first], rel=1e-12, abs=1e-7
+                            )
+    assert math.fsum(
+        value for name, value in actual.items() if "households_by_size" in name
+    ) == pytest.approx(1822217.4461861975, rel=1e-12, abs=1e-7)
+
+
 def test_grouped_tenure_family_multiplicities_and_parked_definitions():
     for row in _rows():
         selector = row["ledger_selector"]
@@ -184,8 +548,12 @@ def test_grouped_tenure_family_multiplicities_and_parked_definitions():
                 == "requires_census_family_nucleus_standard"
             )
         if "households_by_size" in row["name"]:
-            assert "61,725" in row["metadata"]["parking_reason"]
-            assert "unexplained" in row["metadata"]["parking_reason"]
+            assert "d1886" in row["metadata"]["parking_reason"]
+        if "households_by_size" in row["name"] or row["family"] == "housing_tenure":
+            assert (
+                row["metadata"]["activation_status"]
+                == "requires_reference_profile_resolution"
+            )
         if row["family"] == "income":
             assert row["metadata"]["activation_status"].startswith("requires_g8r2")
 
@@ -296,7 +664,11 @@ def test_every_active_scalar_resolves_once_and_grouped_tenure_has_exact_roster(
         references = _parsed(
             [
                 row
-                for row in _rows(filename)
+                for row in (
+                    _effective_rows()
+                    if filename == "target_references.json"
+                    else _rows(filename)
+                )
                 if row["metadata"]["activation_status"] == "active"
             ]
         )
@@ -314,14 +686,9 @@ def test_every_active_scalar_resolves_once_and_grouped_tenure_has_exact_roster(
                     type(code) is int for code in codes
                 )
             members = list(base)
-            for operand in ref.value_operands:
-                if operand.get("role") == "base":
-                    continue
-                selector = {
-                    key: value for key, value in operand.items() if key != "role"
-                }
+            for selector in reference_fact_selectors(ref):
                 resolved = _matched(selector, facts_by_key)
-                assert len(resolved) == 1, (ref.name, operand)
+                assert resolved, (ref.name, selector)
                 members.extend(resolved)
             needed.update({fact["aggregate_fact_key"]: fact for fact in members})
         registry = compile_ledger_target_references(
@@ -364,7 +731,7 @@ def test_all_17_erp_ratios_match_the_reviewed_source_table(
 def test_scaled_tenure_values_are_fractional_exact_bridges_and_national_diagnostics_are_separate(
     artifact, facts_by_key
 ):
-    rows = [row for row in _rows() if row["family"] == "housing_tenure"]
+    rows = [row for row in _effective_rows() if row["family"] == "housing_tenure"]
     registry = compile_ledger_target_references(
         artifact.facts, _parsed(rows), country="nz"
     )
@@ -373,15 +740,25 @@ def test_scaled_tenure_values_are_fractional_exact_bridges_and_national_diagnost
         base = math.fsum(
             fact["value"] for fact in _matched(row["ledger_selector"], facts_by_key)
         )
-        operands = row["value_operands"]
+        operands = {operand["role"]: operand for operand in row["value_operands"]}
         num = _matched(
-            {k: v for k, v in operands[1].items() if k != "role"}, facts_by_key
+            {k: v for k, v in operands["numerator"].items() if k != "role"},
+            facts_by_key,
         )[0]["value"]
         den = _matched(
-            {k: v for k, v in operands[2].items() if k != "role"}, facts_by_key
+            {k: v for k, v in operands["denominator"].items() if k != "role"},
+            facts_by_key,
+        )[0]["value"]
+        total = _matched(
+            {k: v for k, v in operands["total"].items() if k != "role"}, facts_by_key
         )[0]["value"]
-        assert spec.value == base * (num / den)
-        expected.append(base * (num / den))
+        leaf_sum = math.fsum(
+            _matched(selector, facts_by_key)[0]["value"]
+            for selector in operands["partition"]["member_selectors"]
+        )
+        allocated = base + (total - leaf_sum) * base / leaf_sum
+        assert spec.value == pytest.approx(allocated * (num / den), rel=1e-12, abs=1e-7)
+        expected.append(allocated * (num / den))
     diagnostic = next(
         row
         for row in _document("reference_inventory.json")["national_bridge_diagnostics"]
@@ -390,8 +767,8 @@ def test_scaled_tenure_values_are_fractional_exact_bridges_and_national_diagnost
     assert math.fsum(spec.value for spec in registry.specs) == pytest.approx(
         math.fsum(expected), abs=1e-8
     )
-    assert diagnostic["regional_leaf_sum_scaled"] == pytest.approx(
-        math.fsum(expected), abs=1e-8
+    assert diagnostic["regional_published_total_sum_scaled"] == pytest.approx(
+        math.fsum(expected), abs=1e-7
     )
     assert diagnostic["independently_scaled_published_national_total"] == 1780527 * (
         5324700 / 5200000
@@ -465,7 +842,7 @@ def test_published_regional_totals_and_national_totals_remain_independent_diagno
 def test_region_99_is_a_separate_national_growth_proxy_and_ta_999_has_no_erp(artifact):
     rows = [
         row
-        for row in _rows()
+        for row in _effective_rows()
         if row["family"] == "housing_tenure"
         and row["ledger_selector"]["geography_id"] == "99"
     ]
@@ -478,7 +855,9 @@ def test_region_99_is_a_separate_national_growth_proxy_and_ta_999_has_no_erp(art
         assert row["metadata"]["bridge_status"] == "national-growth proxy"
         assert "national-growth proxy" in spec.hierarchy.target.label
         assert all(
-            operand["geography_id"] == "NZ" for operand in row["value_operands"][1:]
+            operand["geography_id"] == "NZ"
+            for operand in row["value_operands"]
+            if operand["role"] in {"numerator", "denominator"}
         )
     erp_facts = [
         fact
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_reference_profiles.py b/packages/microcosm-build/tests/engine_free/shared/test_reference_profiles.py
new file mode 100644
index 0000000000..c7324e58d7
--- /dev/null
+++ b/packages/microcosm-build/tests/engine_free/shared/test_reference_profiles.py
@@ -0,0 +1,293 @@
+"""Effective reference identities and the single extensible profile seam."""
+
+from __future__ import annotations
+
+import copy
+
+import pytest
+
+from microcosm.build.reference_profiles import (
+    REFERENCE_DOCUMENT_KEYS,
+    reference_document_sha256,
+    resolve_reference_profiles,
+    validate_reference_resolution,
+)
+
+
+def _selector(key, category=None):
+    selector = {
+        "aggregate_fact_key": key,
+        "source_name": "publisher",
+        "source_measure_id": "count",
+        "source_concept": "households",
+        "entity_name": "household",
+        "record_set_id": "households",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "region",
+        "geography_id": "a",
+        "geography_vintage": "source-vintage",
+        "dimensions": [] if category is None else ["category"],
+    }
+    if category is not None:
+        selector["dimension_values"] = {"category": category}
+    return selector
+
+
+def _inputs():
+    references = {
+        "country": "toy",
+        "target_references": [
+            {
+                "name": "leaf",
+                "entity": "household",
+                "ledger_selector": _selector("atom", 1),
+                "metadata": {
+                    "activation_status": "requires_reference_profile_resolution"
+                },
+            },
+            {
+                "name": "parked",
+                "entity": "household",
+                "ledger_selector": _selector("other", 2),
+                "metadata": {"activation_status": "requires_other_evidence"},
+            },
+        ],
+    }
+    transformation = {
+        "reference_names": ["leaf"],
+        "operation": "allocated_residual_by_ratio",
+        "value_operands": [
+            {"role": "base", "expected_member_count": 1},
+            {"role": "total", **_selector("total")},
+            {
+                "role": "partition",
+                "member_selectors": [_selector("atom", 1)],
+                "allocation_member_keys": ["atom"],
+            },
+        ],
+        "metadata": {"allocation_ruling": "consumer-ruling"},
+        "notes": "Proportionally allocated residual.",
+    }
+    declarations = {
+        "schema_version": 1,
+        "dimensions": {
+            "residual": {
+                "default": "proportional",
+                "profiles": {
+                    "proportional": {"transformations": [transformation]},
+                    "alternative": {"transformations": []},
+                },
+            },
+            "aging_index": {
+                "default": "central",
+                "profiles": {
+                    "central": {"deferred": True, "transformations": []},
+                    "low": {"available": False, "transformations": []},
+                    "high": {"available": False, "transformations": []},
+                },
+            },
+        },
+    }
+    return references, declarations
+
+
+def test_resolution_is_pure_and_binds_effective_documents():
+    references, declarations = _inputs()
+    original = copy.deepcopy((references, declarations))
+    intervals = {"bands": [{"lower": 0, "upper": None, "lower_closed": True}]}
+    effective, effective_intervals, receipt = resolve_reference_profiles(
+        references, declarations, {}, intervals
+    )
+    assert (references, declarations) == original
+    assert effective_intervals == intervals and effective_intervals is not intervals
+    assert (
+        effective["target_references"][0]["value_operation"]
+        == "allocated_residual_by_ratio"
+    )
+    assert (
+        effective["target_references"][0]["metadata"]["activation_status"] == "active"
+    )
+    assert effective["target_references"][1] == references["target_references"][1]
+    assert receipt["transformed_names"] == ["leaf"]
+    assert receipt["deferred_dimensions"] == ["aging_index"]
+    assert receipt["selection"] == {
+        "aging_index": "central",
+        "residual": "proportional",
+    }
+    assert receipt["effective_intervals_sha256"] == reference_document_sha256(intervals)
+    assert receipt["transformations"]["leaf"]["source_period"] == 2023
+    assert (
+        validate_reference_resolution(
+            effective,
+            receipt,
+            references_sha256=reference_document_sha256(effective),
+            interval_document=effective_intervals,
+        )
+        == receipt
+    )
+    with pytest.raises(ValueError, match="already been resolved"):
+        resolve_reference_profiles(effective, declarations, {})
+
+
+def test_unrelated_profiles_do_not_change_effective_identity():
+    references, declarations = _inputs()
+    first = resolve_reference_profiles(references, declarations, {})
+    declarations["dimensions"]["residual"]["profiles"]["alternative"]["notes"] = (
+        "edited"
+    )
+    assert resolve_reference_profiles(references, declarations, {}) == first
+    # Map insertion order is descriptive to selection, not an execution order.
+    declarations["dimensions"] = dict(
+        reversed(list(declarations["dimensions"].items()))
+    )
+    assert resolve_reference_profiles(references, declarations, {}) == first
+
+
+@pytest.mark.parametrize(
+    "selection",
+    [
+        {"unknown": "x"},
+        {"residual": "unknown"},
+        {"aging_index": "low"},
+        {"aging_index": "high"},
+    ],
+)
+def test_unknown_or_unavailable_profiles_refuse(selection):
+    references, declarations = _inputs()
+    with pytest.raises(ValueError, match="Unknown|unavailable"):
+        resolve_reference_profiles(references, declarations, selection)
+
+
+@pytest.mark.parametrize(
+    "mutation",
+    [
+        "missing",
+        "duplicate",
+        "overlap",
+        "observed",
+        "factor",
+        "interval",
+        "reserved_identity",
+        "deferred_transform",
+    ],
+)
+def test_invalid_transformations_refuse(mutation):
+    references, declarations = _inputs()
+    dimension = declarations["dimensions"]["residual"]
+    transformations = dimension["profiles"]["proportional"]["transformations"]
+    transformation = transformations[0]
+    if mutation == "missing":
+        transformation["reference_names"] = ["missing"]
+    elif mutation == "duplicate":
+        transformation["reference_names"].append("leaf")
+    elif mutation == "overlap":
+        declarations["dimensions"]["other"] = copy.deepcopy(dimension)
+    elif mutation == "observed":
+        transformation["metadata"]["nested"] = {"observed_value": 17}
+    elif mutation == "factor":
+        transformation["factor"] = -1
+    elif mutation == "interval":
+        transformation["operation"] = "scale_money_and_intervals"
+    elif mutation == "reserved_identity":
+        transformation["metadata"]["reference_selection_sha256"] = "forged"
+    elif mutation == "deferred_transform":
+        dimension["profiles"]["proportional"]["deferred"] = True
+    with pytest.raises(ValueError):
+        resolve_reference_profiles(references, declarations, {})
+
+
+@pytest.mark.parametrize(
+    "mutation", ["effective", "supplied_hash", "receipt", "interval", "metadata"]
+)
+def test_stale_effective_documents_and_receipts_refuse(mutation):
+    references, declarations = _inputs()
+    effective, intervals, receipt = resolve_reference_profiles(
+        references, declarations, {}, {"bands": []}
+    )
+    supplied_hash = reference_document_sha256(effective)
+    if mutation == "effective":
+        effective["target_references"][0]["notes"] = "stale"
+    elif mutation == "supplied_hash":
+        supplied_hash = "0" * 64
+    elif mutation == "receipt":
+        receipt["selection"]["residual"] = "alternative"
+    elif mutation == "interval":
+        intervals["bands"].append({"lower": 0})
+    elif mutation == "metadata":
+        effective["target_references"][0]["metadata"]["reference_selection_sha256"] = (
+            "0" * 64
+        )
+    with pytest.raises(ValueError, match="hash mismatch|identity mismatch"):
+        validate_reference_resolution(
+            effective,
+            receipt,
+            references_sha256=supplied_hash,
+            interval_document=intervals,
+        )
+
+
+def test_unsatisfied_prerequisites_remain_parked_after_transformation():
+    references, declarations = _inputs()
+    references["target_references"][0]["metadata"]["activation_status"] = (
+        "requires_other_evidence"
+    )
+    effective, _, _ = resolve_reference_profiles(references, declarations, {})
+    assert (
+        effective["target_references"][0]["metadata"]["activation_status"]
+        == "requires_other_evidence"
+    )
+
+
+@pytest.mark.parametrize("key", ["value", "values", "observed", "observed_value"])
+def test_observed_values_cannot_enter_effective_references(key):
+    references, declarations = _inputs()
+    references["target_references"][0]["metadata"]["audit"] = {key: 19}
+    with pytest.raises(ValueError, match="observed value"):
+        resolve_reference_profiles(references, declarations, {})
+
+
+def test_disjoint_transformations_are_deterministic():
+    references, declarations = _inputs()
+    another = copy.deepcopy(declarations["dimensions"]["residual"])
+    transform = another["profiles"]["proportional"]["transformations"][0]
+    transform["reference_names"] = ["parked"]
+    transform["value_operands"][2]["member_selectors"] = [_selector("other", 2)]
+    transform["value_operands"][2]["allocation_member_keys"] = ["other"]
+    declarations["dimensions"]["another"] = another
+    first = resolve_reference_profiles(references, declarations, {})
+    declarations["dimensions"] = dict(
+        reversed(list(declarations["dimensions"].items()))
+    )
+    assert resolve_reference_profiles(references, declarations, {}) == first
+    assert first[2]["transformed_names"] == ["leaf", "parked"]
+
+
+def test_transformation_must_satisfy_its_declared_profile_prerequisite():
+    references, declarations = _inputs()
+    references["target_references"][0]["metadata"]["required_reference_profile"] = (
+        "other"
+    )
+    with pytest.raises(ValueError, match="prerequisite"):
+        resolve_reference_profiles(references, declarations, {})
+
+
+def test_unselected_profiles_cannot_carry_observed_values():
+    references, declarations = _inputs()
+    declarations["dimensions"]["residual"]["profiles"]["alternative"]["metadata"] = {
+        "audit": {"observed_value": 19}
+    }
+    with pytest.raises(ValueError, match="observed values"):
+        resolve_reference_profiles(references, declarations, {})
+
+
+def test_effective_document_projects_resource_headers_and_binds_full_base():
+    references, declarations = _inputs()
+    references.update(description="Raw resource headers", reference_set="calibration")
+    effective, _, receipt = resolve_reference_profiles(references, declarations, {})
+    assert set(effective) <= REFERENCE_DOCUMENT_KEYS
+    assert receipt["base_references_sha256"] == reference_document_sha256(references)
+    assert receipt["effective_references_sha256"] == reference_document_sha256(
+        effective
+    )
+    assert validate_reference_resolution(effective, receipt) == receipt
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_spec_engine_country_bundles.py b/packages/microcosm-build/tests/engine_free/shared/test_spec_engine_country_bundles.py
index ae4c366f76..b61bccc13e 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_spec_engine_country_bundles.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_spec_engine_country_bundles.py
@@ -234,6 +234,7 @@ def test_nz_generation_zero_views_come_from_the_country_spec_seam() -> None:
         "holdout_references.json",
         "precal_references.json",
         "reference_inventory.json",
+        "reference_profiles.json",
         "release_contract.json",
         "reporting_classifiers.json",
         "scenarios.json",
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_spec_only_country_packages.py b/packages/microcosm-build/tests/engine_free/shared/test_spec_only_country_packages.py
index ac62550a74..88ea8494cb 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_spec_only_country_packages.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_spec_only_country_packages.py
@@ -6,6 +6,8 @@
 import re
 from pathlib import Path, PurePosixPath
 
+import pytest
+
 from microcosm.build.country_spec import ALLOWED_COUNTRY_RESOURCE_KINDS
 from microcosm.build.spec_engine import GENERATED_LOCK_FILENAMES, load_yaml12
 from test_support.paths import paths_for
@@ -222,6 +224,74 @@ def test__given_schema_kernel_reference__then_it_is_not_an_entrypoint() -> None:
     assert not _looks_like_python_entrypoint("kernel:fit_qrf")
 
 
+def _partition_fact_key_roster() -> dict:
+    keys = [
+        "ledger.aggregate_fact.v2:" + "a" * 24,
+        "ledger.aggregate_fact.v2:" + "1" * 24,
+    ]
+    return {
+        "role": "partition",
+        "member_selectors": [{"aggregate_fact_key": key} for key in keys],
+        "allocation_member_keys": keys.copy(),
+    }
+
+
+@pytest.mark.parametrize(
+    "subset", [False, True], ids=["all_members", "recipient_subset"]
+)
+def test__given_typed_partition_fact_keys__then_the_roster_is_data(subset) -> None:
+    partition = _partition_fact_key_roster()
+    if subset:
+        partition["allocation_member_keys"] = partition["allocation_member_keys"][:1]
+    offenders = []
+    _collect_executable_content(partition, "reference.value_operands[2]", offenders)
+    assert offenders == []
+
+
+@pytest.mark.parametrize(
+    "defect",
+    [
+        "mixed",
+        "callable",
+        "citation",
+        "outside_partition",
+        "wrong_role",
+        "unpinned",
+        "malformed_digest",
+        "duplicate_roster",
+    ],
+)
+def test__given_untyped_partition_keys__then_entrypoint_shapes_are_rejected(
+    defect,
+) -> None:
+    partition = _partition_fact_key_roster()
+    payload = partition
+    expected = "reference.allocation_member_keys[0]"
+    if defect == "mixed":
+        partition["allocation_member_keys"].append("dotted.module:callable")
+        expected = "reference.allocation_member_keys[2]"
+    elif defect == "callable":
+        partition["allocation_member_keys"] = ["dotted.module:callable"]
+    elif defect == "citation":
+        payload = {"partition": partition, "citation": "dotted.module:callable"}
+        expected = "reference.citation"
+    elif defect == "outside_partition":
+        payload = {"allocation_member_keys": partition["allocation_member_keys"]}
+    elif defect == "wrong_role":
+        partition["role"] = "base"
+    elif defect == "unpinned":
+        partition["allocation_member_keys"] = ["ledger.aggregate_fact.v2:" + "b" * 24]
+    elif defect == "malformed_digest":
+        partition["allocation_member_keys"] = ["ledger.aggregate_fact.v2:callable"]
+    else:
+        partition["allocation_member_keys"] = [
+            partition["allocation_member_keys"][0]
+        ] * 2
+    offenders = []
+    _collect_executable_content(payload, "reference", offenders)
+    assert expected in offenders
+
+
 def _collect_executable_content(
     value: object,
     location: str,
@@ -247,7 +317,11 @@ def _collect_executable_content(
                 and not compiler_identity_field
             ):
                 offenders.append(child_location)
-            if compiler_identity_field or _is_fact_key_field(key=key, value=child):
+            if (
+                compiler_identity_field
+                or _is_fact_key_field(key=key, value=child)
+                or _is_partition_fact_key_roster(key=key, value=child, parent=value)
+            ):
                 continue
             _collect_executable_content(child, child_location, offenders)
     elif isinstance(value, list):
@@ -348,6 +422,40 @@ def _is_fact_key_field(*, key: str, value: object) -> bool:
     )
 
 
+def _is_partition_fact_key_roster(*, key: str, value: object, parent: dict) -> bool:
+    """Admit only canonical recipient keys pinned by a typed atomic partition."""
+    if (
+        key != "allocation_member_keys"
+        or set(parent) != {"role", "member_selectors", "allocation_member_keys"}
+        or parent.get("role") != "partition"
+        or not isinstance(value, list)
+        or not value
+    ):
+        return False
+    pattern = r"ledger\.aggregate_fact\.v\d+:[0-9a-f]{24}"
+    if any(
+        not isinstance(item, str) or re.fullmatch(pattern, item) is None
+        for item in value
+    ):
+        return False
+    members = parent["member_selectors"]
+    if not isinstance(members, list) or not members:
+        return False
+    keys = []
+    for member in members:
+        if not isinstance(member, dict):
+            return False
+        identity = member.get("aggregate_fact_key")
+        if not isinstance(identity, str) or re.fullmatch(pattern, identity) is None:
+            return False
+        keys.append(identity)
+    return (
+        len(set(keys)) == len(keys)
+        and len(set(value)) == len(value)
+        and set(value) <= set(keys)
+    )
+
+
 def _is_compiler_identity_field(*, key: str, value: object, location: str) -> bool:
     """Admit inert legacy-identity fields inside the typed compiler surface.
 
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_transport_composed_graph.py b/packages/microcosm-build/tests/engine_free/shared/test_transport_composed_graph.py
index b5cdd2856c..051e1c4cb7 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_transport_composed_graph.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_transport_composed_graph.py
@@ -838,6 +838,132 @@ def test_activation_accepts_optional_json_nulls(composed):
     validate_transport_activation(spec)
 
 
+def _transport_spec_with_reference_profile(composed, suffix=""):
+    spec = copy.deepcopy(composed.spec)
+    row = spec["resources"]["target_references"]["target_references"][0]
+    selector = {
+        "aggregate_fact_key": "atom",
+        "source_name": "publisher",
+        "source_measure_id": "count",
+        "source_concept": "population",
+        "entity_name": row["entity"],
+        "record_set_id": "population",
+        "period_type": "calendar_year",
+        "period_value": 2023,
+        "geography_level": "country",
+        "geography_id": "toy",
+        "geography_vintage": "unstated",
+        "dimensions": ["category"],
+        "dimension_values": {"category": 1},
+    }
+    row.pop("ledger_fact_key")
+    row["ledger_selector"] = selector
+    row["metadata"]["activation_status"] = "requires_reference_profile_resolution"
+    total = {key: value for key, value in selector.items() if key != "dimension_values"}
+    total.update(aggregate_fact_key="total", dimensions=[])
+    transformation = {
+        "reference_names": [row["name"]],
+        "operation": "allocated_residual_by_ratio",
+        "value_operands": [
+            {"role": "base", "expected_member_count": 1},
+            {"role": "total", **total},
+            {
+                "role": "partition",
+                "member_selectors": [selector],
+                "allocation_member_keys": ["atom"],
+            },
+        ],
+    }
+    spec["resources"]["reference_profiles"] = {
+        "schema_version": 1,
+        "reference_resource": "target_references" + suffix,
+        "interval_resource": "profile_intervals" + suffix,
+        "dimensions": {
+            "residual": {
+                "default": "central",
+                "profiles": {"central": {"transformations": [transformation]}},
+            },
+            "aging_index": {
+                "default": "central",
+                "profiles": {
+                    "central": {"deferred": True, "transformations": []},
+                    "low": {"available": False, "transformations": []},
+                },
+            },
+        },
+    }
+    spec["resources"]["profile_intervals"] = {"bands": []}
+    return spec, row
+
+
+@pytest.mark.parametrize("suffix", ["", ".json"])
+def test_preflight_and_composition_use_the_same_resolved_reference_view(
+    composed, suffix
+):
+    spec, row = _transport_spec_with_reference_profile(composed, suffix)
+    validate_transport_activation(spec)
+    graph = compose_transport_graph(spec, composed.config)
+    compiler = next(
+        node
+        for node in graph.nodes
+        if node.kernel == "targets.compile@1"
+        and json.loads(node.params["references"])["target_references"][0]["name"]
+        == row["name"]
+    )
+    references = json.loads(compiler.params["references"])
+    receipt = json.loads(compiler.params["reference_resolution"])
+    assert (
+        references["target_references"][0]["metadata"]["activation_status"] == "active"
+    )
+    assert (
+        compiler.params["references_sha256"]
+        == hashlib.sha256(canonical_json(references)).hexdigest()
+    )
+    assert (
+        receipt["effective_references_sha256"] == compiler.params["references_sha256"]
+    )
+    assert (
+        row["metadata"]["activation_status"] == "requires_reference_profile_resolution"
+    )
+    with pytest.raises(ValueError, match="unavailable"):
+        compose_module.reference_profile_view(spec, {"aging_index": "low"})
+
+
+def test_preflight_checks_the_selected_variant_reference_status(composed):
+    spec, row = _transport_spec_with_reference_profile(composed)
+    compiler = copy.deepcopy(
+        next(
+            node
+            for node in spec["resources"]["transport_graph"]["nodes"]
+            if node["kernel"] == "targets.compile@1"
+            and node["params"]["references"]["resource"] == "target_references"
+        )
+    )
+    compiler["id"] = "{variant}.targets"
+    spec["resources"]["entitlement_graph"] = {
+        "schema_version": 1,
+        "variant_nodes": [compiler],
+        "variant_gap": "{variant}.targets",
+    }
+    variant = {
+        "id": "candidate",
+        "tier": "calibration",
+        "knobs": {"residual": "central"},
+    }
+    spec["resources"]["scenarios"]["scenarios"] = [variant]
+    validate_transport_activation(spec)
+    profiles = spec["resources"]["reference_profiles"]["dimensions"]["residual"][
+        "profiles"
+    ]
+    profiles["unresolved"] = {"transformations": []}
+    variant["knobs"]["residual"] = "unresolved"
+    with pytest.raises(
+        ValueError,
+        match="placeholder reference target_references\\." + re.escape(row["name"]),
+    ):
+        validate_transport_activation(spec)
+
+
 class _IllegalOwner(KernelBase):
     ref = "test.illegal_owner@1"
     capabilities = Capabilities(Determinism.DETERMINISTIC)
@@ -1166,7 +1292,9 @@ def test_packaged_spec_refuses_with_every_activation_gap_named():
     # Schedule 2, so it is no longer an activation gap.
     assert "benefit_unit_rule.dependent_child" not in str(error.value)
     for resource in ("precal_references", "target_references", "holdout_references"):
-        for reference in spec["resources"][resource]["target_references"]:
+        for reference in compose_module.transport_resource(spec, resource)[
+            "target_references"
+        ]:
             if reference["metadata"].get("activation_status", "active") != "active":
                 assert f"placeholder reference {resource}.{reference['name']}" in str(
                     error.value
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_transport_target_kernels.py b/packages/microcosm-build/tests/engine_free/shared/test_transport_target_kernels.py
index 48e6573e3d..9550f1ccaf 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_transport_target_kernels.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_transport_target_kernels.py
@@ -29,11 +29,17 @@
 from hypothesis import strategies as st
 
 from microcosm.build.ledger_artifact import ChronicleFeedPinMismatchError
+from microcosm.build.reference_profiles import (
+    reference_document_sha256,
+    resolve_reference_profiles,
+)
 from microcosm.build.transport.artifact_types import (
+    CALIBRATION_PREPARATION_TYPE,
     COMPARISON_TYPE,
     TARGET_SURFACE_TYPE,
 )
 from microcosm.build.transport.target_kernels import (
+    CALIBRATION_PREPARE,
     TAKEUP_COMPARE,
     TARGETS_COMPILE,
     TARGETS_PROBLEM,
@@ -41,6 +47,7 @@
     decode_target_surface,
     parse_reference_document,
 )
+from microcosm.calibrate import TargetRegistry
 from microcosm.calibrate.artifacts import PROBLEM_TYPE, decode_problem
 from microcosm.frame import WeightKind
 from microcosm.graph import (
@@ -50,6 +57,7 @@
     KernelContext,
     Node,
     NumericScope,
+    Owned,
     Slice,
 )
 from microcosm.graph.canonical import canonical_json
@@ -136,7 +144,12 @@ def _problem_node() -> Node:
 
 
 def test_kernels_declare_honest_country_neutral_contracts() -> None:
-    for kernel in (TARGETS_COMPILE, TARGETS_PROBLEM, TAKEUP_COMPARE):
+    for kernel in (
+        CALIBRATION_PREPARE,
+        TARGETS_COMPILE,
+        TARGETS_PROBLEM,
+        TAKEUP_COMPARE,
+    ):
         assert isinstance(kernel, Kernel)
         assert "nz" not in kernel.ref
         assert kernel.capabilities.consumes_se is False
@@ -145,11 +158,12 @@ def test_kernels_declare_honest_country_neutral_contracts() -> None:
         len(
             {
                 TARGETS_COMPILE.implementation_hash(),
+                CALIBRATION_PREPARE.implementation_hash(),
                 TARGETS_PROBLEM.implementation_hash(),
                 TAKEUP_COMPARE.implementation_hash(),
             }
         )
-        == 3
+        == 4
     )
 
 
@@ -185,6 +199,244 @@ def test_compile_values_are_the_fact_values(tmp_path) -> None:
         assert spec.value == facts[f"Toy fact {spec.name}"]
 
 
+def _profile_document(choice="central", intervals=None):
+    declarations = {
+        "schema_version": 1,
+        "dimensions": {
+            "allocation": {
+                "default": "central",
+                "profiles": {
+                    name: {"transformations": []} for name in ("central", "sensitivity")
+                },
+            }
+        },
+    }
+    return resolve_reference_profiles(
+        references_for(CALIBRATION_TARGETS),
+        declarations,
+        {"allocation": choice},
+        intervals,
+    )
+
+
+def _preparation_node(document, receipt, intervals=None, *, dtype="int64"):
+    bindings = {
+        "schema_version": 1,
+        "required_inputs": {"household": ["household_id"]},
+        "input_domains": {"household": {"household_id": {"kind": "identity"}}},
+        "columns": [{"entity": "household", "name": "prepared_marker", "constant": 1}],
+    }
+    return Node(
+        "prepare",
+        "calibration.prepare@1",
+        population="open",
+        params={
+            "bindings": canonical_text(bindings),
+            "references": canonical_text(document),
+            "references_sha256": reference_document_sha256(document),
+            "reference_resolution": canonical_text(receipt),
+            **(
+                {"intervals": canonical_text(intervals)}
+                if intervals is not None
+                else {}
+            ),
+        },
+        outputs=(Owned("household", "prepared_marker", dtype=dtype),),
+        artifact_outputs=(ArtifactOutput("preparation", CALIBRATION_PREPARATION_TYPE),),
+    )
+
+
+@pytest.mark.parametrize(
+    "defect",
+    [
+        "selection",
+        "interval",
+        "reference",
+        "missing",
+        "inventory",
+        "empty_inventory",
+        "values",
+        "identities",
+    ],
+)
+def test_problem_refuses_stale_interval_or_preparation_profile(tmp_path, defect):
+    intervals = {"bands": [1, 2]}
+    document, _, receipt = _profile_document(intervals=intervals)
+    facts = write_facts(tmp_path / "facts.jsonl", toy_facts(CALIBRATION_TARGETS))
+    payload, _ = compile_target_surface(
+        facts,
+        document,
+        country=COUNTRY,
+        references_sha256=reference_document_sha256(document),
+        reference_resolution=receipt,
+    )
+    frame = toy_frame()
+    prepared = CALIBRATION_PREPARE.run(
+        _context(_preparation_node(document, receipt, intervals), frame=frame)
+    )
+    evidence = json.loads(prepared.artifacts["preparation"])
+    if defect in {"selection", "interval", "reference"}:
+        key = {
+            "selection": "reference_selection_sha256",
+            "interval": "effective_intervals_sha256",
+            "reference": "references_sha256",
+        }[defect]
+        evidence[key] = "f" * 64
+    elif defect == "empty_inventory":
+        evidence["columns"] = []
+    artifacts = {"surface": _artifact(payload, TARGET_SURFACE_TYPE)}
+    if defect != "missing":
+        artifacts["preparation"] = _artifact(
+            canonical_json(evidence), CALIBRATION_PREPARATION_TYPE
+        )
+    context = _context(_problem_node(), frame=frame, artifacts=artifacts)
+    if defect != "inventory":
+        context.tables["household"]["prepared_marker"] = 1
+    if defect == "values":
+        context.tables["household"]["prepared_marker"] = 2
+    elif defect == "identities":
+        context.tables["household"]["household_id"] = list(
+            reversed(context.tables["household"]["household_id"].tolist())
+        )
+    with pytest.raises(ValueError, match="preparation"):
+        TARGETS_PROBLEM.run(context)
+
+
+@pytest.mark.parametrize("dtype", ["int64", "float64"])
+def test_preparation_and_resolution_evidence_bind_the_problem(tmp_path, dtype):
+    document, _, receipt = _profile_document()
+    facts = write_facts(tmp_path / "facts.jsonl", toy_facts(CALIBRATION_TARGETS))
+    payload, _ = compile_target_surface(
+        facts,
+        document,
+        country=COUNTRY,
+        references_sha256=reference_document_sha256(document),
+        reference_resolution=receipt,
+    )
+    frame = toy_frame()
+    prepared = CALIBRATION_PREPARE.run(
+        _context(_preparation_node(document, receipt, dtype=dtype), frame=frame)
+    )
+    emitted = prepared.columns["household", "prepared_marker"]
+    assert emitted.dtype == np.dtype(dtype)
+    evidence = json.loads(prepared.artifacts["preparation"])
+    assert evidence["columns"][0]["values_sha256"] == reference_document_sha256(
+        emitted.tolist()
+    )
+    context = _context(
+        _problem_node(),
+        frame=frame,
+        artifacts={
+            "surface": _artifact(payload, TARGET_SURFACE_TYPE),
+            "preparation": _artifact(
+                prepared.artifacts["preparation"], CALIBRATION_PREPARATION_TYPE
+            ),
+        },
+    )
+    context.tables["household"]["prepared_marker"] = emitted.to_numpy(copy=True)
+    result = TARGETS_PROBLEM.run(context)
+    decoded = decode_problem(result.artifacts["problem"])
+    assert decoded.bindings["reference_resolution"] == receipt
+    assert (
+        decoded.bindings["reference_selection_sha256"]
+        == receipt["reference_selection_sha256"]
+    )
+    assert result.receipt["preparation_sha256"] == reference_document_sha256(
+        json.loads(prepared.artifacts["preparation"])
+    )
+
+
+def test_profile_compilation_checks_actual_reference_document_hash(tmp_path):
+    document, _, receipt = _profile_document()
+    facts = write_facts(tmp_path / "facts.jsonl", toy_facts(CALIBRATION_TARGETS))
+    with pytest.raises(ValueError, match="hash mismatch"):
+        compile_target_surface(
+            facts,
+            document,
+            country=COUNTRY,
+            references_sha256=SHA,
+            reference_resolution=receipt,
+        )
+
+    document["target_references"][0]["notes"] = "stale effective document"
+    with pytest.raises(ValueError, match="hash mismatch"):
+        compile_target_surface(
+            facts,
+            document,
+            country=COUNTRY,
+            references_sha256=reference_document_sha256(document),
+            reference_resolution=receipt,
+        )
+
+
+def test_decode_resolved_surface_requires_the_resolution_receipt(tmp_path):
+    payload = _surface(tmp_path)
+    surface = decode_target_surface(payload)
+    specs = list(surface.registry.specs)
+    specs[0] = replace(
+        specs[0], metadata={**specs[0].metadata, "reference_profiles_resolved": "1"}
+    )
+    registry = TargetRegistry(specs, country=COUNTRY)
+    document = json.loads(payload)
+    document["registry"].update(
+        version=registry.version, specs=[spec.to_dict() for spec in registry.specs]
+    )
+    with pytest.raises(ValueError, match="requires its reference resolution receipt"):
+        decode_target_surface(canonical_json(document))
+
+
+@pytest.mark.parametrize("defect", ["receipt", "references", "selection", "interval"])
+def test_decode_surface_refuses_stale_resolution_evidence(tmp_path, defect):
+    document, _, receipt = _profile_document(intervals={"bands": []})
+    facts = write_facts(tmp_path / "facts.jsonl", toy_facts(CALIBRATION_TARGETS))
+    payload, registry = compile_target_surface(
+        facts,
+        document,
+        country=COUNTRY,
+        references_sha256=reference_document_sha256(document),
+        reference_resolution=receipt,
+    )
+    raw = json.loads(payload)
+    if defect == "receipt":
+        raw["reference_resolution"]["selection"]["allocation"] = "sensitivity"
+    elif defect == "references":
+        raw["references_sha256"] = "f" * 64
+    else:
+        specs = list(registry.specs)
+        metadata = {
+            **specs[0].metadata,
+            "reference_profiles_resolved": "1",
+            "reference_selection_sha256": receipt["reference_selection_sha256"],
+            "effective_intervals_sha256": receipt["effective_intervals_sha256"],
+        }
+        metadata[
+            {
+                "selection": "reference_selection_sha256",
+                "interval": "effective_intervals_sha256",
+            }[defect]
+        ] = "f" * 64
+        specs[0] = replace(specs[0], metadata=metadata)
+        altered = TargetRegistry(specs, country=COUNTRY)
+        raw["registry"].update(
+            version=altered.version, specs=[spec.to_dict() for spec in altered.specs]
+        )
+    with pytest.raises(
+        ValueError, match="receipt hash|reference hash|profile identity"
+    ):
+        decode_target_surface(canonical_json(raw))
+
+
+@pytest.mark.parametrize("defect", ["missing", "stale"])
+def test_preparation_requires_its_effective_interval_companion(defect):
+    intervals = {"bands": [1, 2]}
+    document, _, receipt = _profile_document(intervals=intervals)
+    node = _preparation_node(
+        document, receipt, None if defect == "missing" else {"bands": [2, 3]}
+    )
+    with pytest.raises(ValueError, match="interval"):
+        CALIBRATION_PREPARE.run(_context(node, frame=toy_frame()))
+
+
 def test_target_compiler_passes_full_feed_pin_to_loader(tmp_path) -> None:
     facts, pin = write_pinned_artifact(tmp_path / "artifact", toy_facts(ALL_TARGETS))
     document = references_for(CALIBRATION_TARGETS)
diff --git a/packages/microcosm-build/tests/golden/nz_country_spec.json b/packages/microcosm-build/tests/golden/nz_country_spec.json
index 8e59894571..975b622934 100644
--- a/packages/microcosm-build/tests/golden/nz_country_spec.json
+++ b/packages/microcosm-build/tests/golden/nz_country_spec.json
@@ -1,6 +1,6 @@
 {
   "country": "nz",
-  "fingerprint": "5321c87b59a86b981a5b8fc00743719239ac5626f31fc5d9b6f07dc4eb6efb4c",
+  "fingerprint": "d970b6e900b7f5d455a86158718703444ac91c15d49b2203720fc2bdf2baba7d",
   "gate_ids": [
     "calibration_per_family_fit",
     "demography_per_family_fit",
@@ -43,19 +43,20 @@
     "axiom_input_closure.json": "c3c164f437b05d598af7e604d2cb46365a8323a8043da49b08c5e0cdf32e2ec1",
     "axiom_rules_bindings.json": "72905af77132ff6a3c01ada4b6210be4c369d9c6dc49dc8c1b673e4bac0b5fb1",
     "benefit_unit_rule.json": "a9e8cbfd38a64d2f8db0002fe8c31bb5a18fb34dbe59fa943336487ce95e2ca8",
-    "calibration_bindings.json": "ce69109c407de06899c9d47c2bebd2215b66c71777663f30dfb68a05af1634e6",
+    "calibration_bindings.json": "2293672e396407a24caaa5788638e7a1e7fc962575bc2551f500fbc309c3fe32",
     "chronicle_feed.json": "60a80dd0042838b0412baf9dd0985c961b4253a6876d16bcdbb8a2c6c03de0c7",
-    "country_package.json": "f5df55b952debf849a3c0c1489257fd6d3ad8eb8064eb73f83babcd469ad8d21",
+    "country_package.json": "5ab555a9ffa6f55598314b0886670c1446dde557c8e434eb6fd84857ec69a513",
     "currency_bridge.json": "aa6a4b286a6a1a015088f32ac013148553422c3d45eeef7d7a15af08388857ca",
     "export_contract.json": "2c7414fefe395c4f5822643dcd3bb3544ebb2040259aa007b828a99bd01ae210",
-    "gates.json": "115f569914899cbf9dc13e2227e3eb8d21886821d63256082f1ec24dd8cc554c",
+    "gates.json": "fa08b508ce1c93ef7627ca06f3a9e808f8fa6ea6f23ce24fa54c58241bbb9f7f",
     "geography_spine.json": "799bb85e0e4ef943b9f14c6223e2b6168d587e09d1fbf8c7ea2e1aaa0eaee17d",
     "holdout_references.json": "52b5a2360502156da1392a68350e4e7f61b5fd420fa74428819b65886a9f8655",
-    "precal_references.json": "ee3445f36111221b07441a170ecc8267f667b7ab787881804733a109a6f804e7",
-    "reference_inventory.json": "a4796d19e44e6db37ba28499cd6b06e61be2bcab336aa352e8ce1cf2c2862735",
+    "precal_references.json": "420361e424405df2312bd21808d6b6f4c3428b6fe90c44c37ab156ce197aa25d",
+    "reference_inventory.json": "a1356d3c7f91f4025a31a1edc68e2fe78017ec7a5eeb497d91031d4166e3765e",
+    "reference_profiles.json": "b0f23587f707c4af71eedfc450eae9175886f92e77d732a0e24758df83ec505d",
     "release_contract.json": "6cd5e3a4a2bf30e4025e04e964c393b24040937d13db7e6a07b3966a55f3b114",
-    "reporting_classifiers.json": "d1a5011e2163a4ceec5f030e155a02f7bc4a3bc0ad59f06fb7a406993319512f",
-    "scenarios.json": "9c70241a6203b3a66dc09587c8b955d9d421bbe32f018ea1542e7639f4c7507c",
+    "reporting_classifiers.json": "2700a8dab0bcc186a0ce354a09c7cab127e8b07589b15fb7d63c7f1581041ad8",
+    "scenarios.json": "3f1b5e40d283d7a1baf1a6990f2ca08a0ca39151a8cff028a49455f95e82e9c7",
     "source_stages.json": "cc82c68878ac0fc07ecbd796c1a66de6f34786ef8785125046425c37f26aff31",
     "spec/bundle.yaml": "e9716ce827e9006d4efdc392e7aaf9cbc33c16112a8fbc423e8f3e74ec506d8e",
     "spec/catalogs.yaml": "3ab2025af39cba93ead707b9463e428430a45b30696a43d0906cbcd97ed36631",
@@ -63,7 +64,7 @@
     "spec/sources.yaml": "ee015a35820e4688c7325d24bf0dac0ad090226d15401d2e3b83bde4413561be",
     "spec/spine.yaml": "b3e6a2832ff7671777cae113b7fc45f5e3492bb519526f229118d0851083533e",
     "spec/vintages.yaml": "1ecc1a3f952bd25b834c394314e8c933ddb5b095fd64ba492dddb03e3cdd803e",
-    "target_references.json": "a987d5269f9f50026fbf92c506d914ae2c05fc8e4cc33595faaf466140f91e94"
+    "target_references.json": "39c40fbd2277d68304b141dedd8e01800fd93f58d1950ad7cce8e103e4daeeca"
   },
   "resources": [
     "spec/bundle.yaml",
@@ -86,6 +87,7 @@
     "holdout_references.json",
     "precal_references.json",
     "reference_inventory.json",
+    "reference_profiles.json",
     "release_contract.json",
     "reporting_classifiers.json",
     "scenarios.json",
diff --git a/tools/generate_nz_target_references.py b/tools/generate_nz_target_references.py
index 156a128d83..1a3f309a81 100644
--- a/tools/generate_nz_target_references.py
+++ b/tools/generate_nz_target_references.py
@@ -1,4 +1,4 @@
-"""Generate the reviewed NZ G8-r1 selector inventory from a pinned artifact.
+"""Generate the reviewed NZ G8-r1b selector inventory from a pinned artifact.
 
 Run with ``NZ_CHRONICLE_ARTIFACT`` or ``--artifact``. Observations stay in
 Chronicle: references contain selectors only; the separate inventory resource
@@ -62,7 +62,22 @@
         "rent_free",
     ],
 }
-SIZE_REASON = "Eight Census household-size leaves sum 61,725 households (3.5%) below the published national total, unexplained; no residual category is permitted."
+RESIDUAL_REASON = "Requires the shared reference-profile resolver to apply d1886 Census not-stated residual allocation before the single ERP bridge; raw size and tenure rows cannot compile."
+RESIDUAL_DISCLOSURE = (
+    "d1886 modelling convention, 23 October 2026. Microcosm allocates Census "
+    "counts with unstated household size across stated size categories in "
+    "proportion to their stated counts, assuming missing at random. Each region's "
+    "computed residual is its independently published household total minus its "
+    "stated leaves. The national size calculation is 61,725 households; regional "
+    "calculations sum to 61,713. Tenure uses the same proportional convention: "
+    "the national difference is 426 and regional differences sum to 429. These "
+    "regional differences and allocated leaves are Microcosm calculations, not "
+    "Stats NZ published residual cells or allocated estimates. The sensitivity "
+    "allocates size residuals only to one- and two-person households in their "
+    "stated proportions. Fractional targets are retained. Allocation precedes "
+    "one application of B2 ERP growth. Region 99 remains separate and uses the "
+    "disclosed national-growth proxy."
+)
 FAMILY_REASON = "Stats NZ Census-family nucleus standard and deterministic roster producer are not encoded; MC7 benefit units and family labels cannot substitute for Census multiplicities."
 IRD_REASON = "G8-r2: reviewed IRD-definition taxable-income binding, component closure, record universe, numerical intervals and B5 ageing remain required."
 RECEIPT_REASON = "G8-w: age-stratified receipt assignment is not supported by the current total-only receipt kernel; preserve the source snapshot and age filters."
@@ -262,6 +277,25 @@ def calibration_bindings():
                 }
             )
     for region in regions:
+        for size in range(1, 9):
+            columns.append(
+                {
+                    "entity": "household",
+                    "name": f"household_region_{region}_size_{size}_indicator",
+                    "predicates": [
+                        {
+                            "column": "household_region_code",
+                            "operator": "eq",
+                            "value": region,
+                        },
+                        {
+                            "column": "household_size",
+                            "operator": "ge" if size == 8 else "eq",
+                            "value": size,
+                        },
+                    ],
+                }
+            )
         for tenure, values in TENURE.items():
             columns.append(
                 {
@@ -292,15 +326,29 @@ def calibration_bindings():
         "schema_version": 1,
         "country": "nz",
         "required_inputs": {
-            "person": ["age", "region_code"],
-            "household": ["household_region_code", "tenure"],
+            "person": ["age", "region_code", "person_id", "person_household_id"],
+            "household": ["household_region_code", "tenure", "household_id"],
         },
+        "roster_counts": [
+            {
+                "entity": "household",
+                "name": "household_size",
+                "member_entity": "person",
+                "entity_id": "household_id",
+                "member_id": "person_id",
+                "membership": "person_household_id",
+                "representation": "Model roster represents usual-resident household membership.",
+            }
+        ],
         "input_domains": {
             "person": {
+                "person_id": {"kind": "identity"},
+                "person_household_id": {"kind": "identity"},
                 "age": {"kind": "nonnegative_integer"},
                 "region_code": {"values": regions},
             },
             "household": {
+                "household_id": {"kind": "identity"},
                 "household_region_code": {"values": regions},
                 "tenure": {"values": list(TENURE_DOMAIN)},
             },
@@ -388,8 +436,8 @@ def build_reference_documents(artifact, *, package_dir=SPEC):
             8,
             "stats_nz_census_households_by_size_region",
             "household_structure",
-            "requires_explained_census_household_size_universe",
-            SIZE_REASON,
+            "requires_reference_profile_resolution",
+            RESIDUAL_REASON,
         ),
         (
             "family_type",
@@ -425,6 +473,18 @@ def build_reference_documents(artifact, *, package_dir=SPEC):
                     label=f"{fact['geography']['name']} Census {'family type' if is_family else 'household size'} {code}, ERP-density bridge to June 2025",
                 )
                 _bridge(row, region, erp)
+                if not is_family:
+                    row["metadata"]["required_reference_profile"] = (
+                        "census_residual_allocation"
+                    )
+                    row["hierarchy"]["target_label"] += (
+                        "; d1886 profile-resolved allocation"
+                    )
+                    if region == "99":
+                        row["metadata"]["growth_geography_proxy"] = (
+                            "national-growth proxy"
+                        )
+                        row["hierarchy"]["target_label"] += " (national-growth proxy)"
                 targets.append(row)
     for region in (*REGIONS, "99"):
         for tenure, codes in (("owned", [1, 3]), ("not_owned", [2])):
@@ -451,10 +511,16 @@ def build_reference_documents(artifact, *, package_dir=SPEC):
                 entity="household",
                 measure="households",
                 family="housing_tenure",
+                status="requires_reference_profile_resolution",
+                reason=RESIDUAL_REASON,
                 filter_column=f"household_region_{region}_{tenure}_indicator",
                 label=label,
             )
             _bridge(row, region, erp, members=codes if tenure == "owned" else None)
+            row["metadata"]["required_reference_profile"] = "census_residual_allocation"
+            row["hierarchy"]["target_label"] += "; d1886 profile-resolved allocation"
+            if region == "99":
+                row["metadata"]["growth_geography_proxy"] = "national-growth proxy"
             targets.append(row)
     for measure, contract, column in (
         ("individuals", "ird_taxable_income_people_by_band", "people"),
@@ -634,20 +700,195 @@ def build_reference_documents(artifact, *, package_dir=SPEC):
         documents[filename] = {
             "country": "nz",
             "reference_set": reference_set,
-            "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. G8-r1 selector inventory; active demography and tenure use prepared columns, TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
-            "allowed_value_operations": ["identity", "rolled_forward_by_ratio"]
+            "description": "Generated by tools/generate_nz_target_references.py from the pinned Chronicle feed. Size and tenure require d1886 profile resolution; demography uses prepared columns and TA ERP is support input. Named parked rows refuse direct compilation. No observation is carried by a reference.",
+            "allowed_value_operations": [
+                "identity",
+                "rolled_forward_by_ratio",
+                "allocated_residual_by_ratio",
+            ]
             if reference_set == "calibration"
             else ["identity"],
             "target_references": rows,
             "target_profile": {"schema_version": 1, "hierarchy_reconciliations": []},
         }
     documents["calibration_bindings.json"] = calibration_bindings()
+    documents["reference_profiles.json"] = _reference_profiles(inventory, targets)
     documents["reference_inventory.json"] = _receipts(
         inventory, erp, documents, feed_pin, ta_facts
     )
     return documents
 
 
+def _allocation_operands(inventory, row, recipients):
+    selector = row["ledger_selector"]
+    region = selector["geography_id"]
+    size = "households_by_size" in row["name"]
+    table = "household_size" if size else "tenure"
+    dimension = f"nz_census_2023.{'household_size' if size else 'household_tenure'}_source_label"
+    leaves = [
+        inventory.one(
+            f"stats_nz.census_2023.rc_{region}.{table}",
+            dimensions={dimension: code},
+        )
+        for code in range(1, 9 if size else 4)
+    ]
+    codes = selector["dimension_values"][dimension]
+    return [
+        {
+            "role": "base",
+            "expected_member_count": len(codes) if isinstance(codes, list) else 1,
+        },
+        {
+            "role": "total",
+            **_selector(
+                inventory.one(
+                    f"stats_nz.census_2023.rc_{region}.households", dimensions={}
+                )
+            ),
+        },
+        {
+            "role": "partition",
+            "member_selectors": [_selector(fact) for fact in leaves],
+            "allocation_member_keys": [
+                fact["aggregate_fact_key"]
+                for fact in leaves
+                if fact["dimensions"][dimension] in recipients
+            ],
+        },
+        *copy.deepcopy(row["value_operands"][1:]),
+    ]
+
+
+def _reference_profiles(inventory, rows):
+    profiles = {}
+    for profile in ("mar", "small_households"):
+        transformations = []
+        for row in rows:
+            if (
+                row["metadata"]["activation_status"]
+                != "requires_reference_profile_resolution"
+            ):
+                continue
+            size = "households_by_size" in row["name"]
+            recipients = (
+                [1, 2]
+                if size and profile == "small_households"
+                else list(range(1, 9 if size else 4))
+            )
+            transformations.append(
+                {
+                    "reference_names": [row["name"]],
+                    "operation": "allocated_residual_by_ratio",
+                    "value_operands": _allocation_operands(inventory, row, recipients),
+                    "metadata": {
+                        "allocation_ruling": "d1886",
+                        "census_residual_allocation": profile,
+                    },
+                    "notes": f"d1886 modelling convention: {'missing at random proportional size and tenure allocation' if profile == 'mar' else 'size residual only to one- and two-person households; tenure remains proportional'}. Computed regional residuals and fractional targets; allocation precedes one B2 ERP bridge.",
+                    "target_label": row["hierarchy"]["target_label"] + f" ({profile})",
+                }
+            )
+        profiles[profile] = {"transformations": transformations}
+    return {
+        "schema_version": 1,
+        "dimensions": {
+            "census_residual_allocation": {"default": "mar", "profiles": profiles},
+            "aging_index": {
+                "default": "central",
+                "profiles": {
+                    "central": {"transformations": [], "deferred": True},
+                    "low": {"available": False, "transformations": []},
+                    "high": {"available": False, "transformations": []},
+                },
+            },
+        },
+    }
+
+
+def _residual_receipts(inventory, erp):
+    receipts = []
+    for region in (*REGIONS, "99"):
+        total = inventory.one(
+            f"stats_nz.census_2023.rc_{region}.households", dimensions={}
+        )
+        growth = erp["NZ" if region == "99" else region]
+        ratio = growth[2025]["value"] / growth[2023]["value"]
+        for table, dimension, codes in (
+            ("household_size", "household_size", range(1, 9)),
+            ("tenure", "household_tenure", range(1, 4)),
+        ):
+            leaves = [
+                inventory.one(
+                    f"stats_nz.census_2023.rc_{region}.{table}",
+                    dimensions={f"nz_census_2023.{dimension}_source_label": code},
+                )
+                for code in codes
+            ]
+            leaf_sum = math.fsum(fact["value"] for fact in leaves)
+            residual = total["value"] - leaf_sum
+            if residual < 0:
+                raise ValueError(f"Negative {table} residual for {region}")
+            for profile in ("mar", "small_households"):
+                recipients = (
+                    [1, 2]
+                    if table == "household_size" and profile == "small_households"
+                    else list(codes)
+                )
+                mass = math.fsum(
+                    fact["value"]
+                    for code, fact in zip(codes, leaves, strict=True)
+                    if code in recipients
+                )
+                allocated = [
+                    fact["value"]
+                    + (
+                        residual * fact["value"] / mass
+                        if code in recipients and residual
+                        else 0
+                    )
+                    for code, fact in zip(codes, leaves, strict=True)
+                ]
+                closure = math.fsum(allocated)
+                final_closure = math.fsum(count * ratio for count in allocated)
+                if not math.isclose(
+                    closure, total["value"], rel_tol=1e-12, abs_tol=1e-7
+                ) or not math.isclose(
+                    final_closure, total["value"] * ratio, rel_tol=1e-12, abs_tol=1e-7
+                ):
+                    raise ValueError(
+                        f"Allocation does not close for {region} {table} {profile}"
+                    )
+                receipts.append(
+                    {
+                        "geography_id": region,
+                        "table": table,
+                        "profile": profile,
+                        "classification": "Microcosm computed regional residual and allocated outputs; not published Stats NZ cells",
+                        "allocation_ruling": "d1886",
+                        "total_selector": _selector(total),
+                        "leaf_selectors": [_selector(fact) for fact in leaves],
+                        "published_total": total["value"],
+                        "raw_leaf_sum": leaf_sum,
+                        "computed_residual": residual,
+                        "recipient_codes": recipients,
+                        "allocation_policy": "proportional to stated recipient counts",
+                        "allocated_counts": allocated,
+                        "allocated_closure": closure,
+                        "numerator_selector": _selector(growth[2025]),
+                        "denominator_selector": _selector(growth[2023]),
+                        "growth_ratio": ratio,
+                        "growth_applications": 1,
+                        "bridge": "national-growth proxy"
+                        if region == "99"
+                        else "regional ERP growth",
+                        "final_closure": final_closure,
+                        "expected_final_closure": total["value"] * ratio,
+                        "tolerance": {"rel_tol": 1e-12, "abs_tol": 1e-7},
+                    }
+                )
+    return receipts
+
+
 def _receipts(inventory, erp, documents, feed_pin, ta_facts):
     discrepancies, diagnostics = [], []
     for table, dimension, codes, total_table in (
@@ -688,12 +929,12 @@ def _receipts(inventory, erp, documents, feed_pin, ta_facts):
                 "published_national_total": total["value"],
                 "published_national_leaf_sum": source_sum,
                 "deficit": total["value"] - source_sum,
-                "handling": "Preserve the published discrepancy; no residual category or hidden reconciliation.",
-                "activation": "parked: " + SIZE_REASON
-                if table == "household_size"
-                else "parked: " + FAMILY_REASON
+                "handling": "Preserve raw published discrepancies and allocate each region's independently computed residual under d1886; national calculations remain separate diagnostics."
+                if table != "family_type"
+                else "Preserve the published discrepancy; no residual category or hidden reconciliation.",
+                "activation": "parked: " + FAMILY_REASON
                 if table == "family_type"
-                else "Tenure leaves active; published total diagnostic only.",
+                else "Requires d1886 reference-profile resolution; total is an allocation operand and never an additional fitted target.",
             }
         )
         diagnostics.append(
@@ -739,7 +980,7 @@ def _receipts(inventory, erp, documents, feed_pin, ta_facts):
         ),
         (
             "census_national_and_regional_totals",
-            "Diagnostic receipts only; do not select totals with leaves.",
+            "Allocation operands or diagnostic receipts only; do not select totals as fitted rows with leaves.",
         ),
         (
             "ird_taxable_income_total_row_246",
@@ -772,11 +1013,11 @@ def _receipts(inventory, erp, documents, feed_pin, ta_facts):
         ),
         (
             "region_99_erp",
-            "No regional ERP series exists; Census region 99 uses the explicit national-growth proxy, without residual inference.",
+            "No regional ERP series exists; Census region 99 keeps its local total and computed residual, then uses the explicit national-growth proxy.",
         ),
         (
             "qes_prefu_and_b5_ageing",
-            "G8-r2; QES/PREFU rows are absent from this pinned artifact.",
+            "G8-r2; QES/PREFU rows are present in the pinned artifact but unused by this residual-allocation task.",
         ),
         (
             "wff_tripwires",
@@ -804,6 +1045,12 @@ def _receipts(inventory, erp, documents, feed_pin, ta_facts):
             for region, values in erp.items()
         ],
         "source_discrepancies": discrepancies,
+        "modelling_convention": {
+            "ruling": "d1886",
+            "date": "2026-10-23",
+            "disclosure": RESIDUAL_DISCLOSURE,
+        },
+        "regional_profile_allocations": _residual_receipts(inventory, erp),
         "national_bridge_diagnostics": diagnostics,
         "ta_support": {
             "count": len(ta_facts),

From 966a566d7e491324d9723fe7eafb0fadd37e1ecc Mon Sep 17 00:00:00 2001
From: Max Ghenis <mghenis@gmail.com>
Date: Fri, 23 Oct 2026 20:17:43 -0400
Subject: [PATCH 2/4] Count V4 in the NZ cell-support flag pin

The reported_cell_support_target_a gate now requires ten scenarios
(S0-S5, V1-V4), so its tracked-target flags number 43 cells x 10.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../tests/engine_free/shared/test_transport_weight_quality.py   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/microcosm-build/tests/engine_free/shared/test_transport_weight_quality.py b/packages/microcosm-build/tests/engine_free/shared/test_transport_weight_quality.py
index 9af18e8e91..afc76ddc57 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_transport_weight_quality.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_transport_weight_quality.py
@@ -496,7 +496,7 @@ def test_adopted_cell_targets_are_flagged_and_never_block():
     outcome = report.outcomes[0]
     assert outcome.status is GateStatus.FAILED
     flags = outcome.result.details["meets_tracked_target"]
-    assert len(flags) == 43 * 9
+    assert len(flags) == 43 * 10
     assert not any(flags.values())
     assert not report.blocking_outcomes(release_candidate=True)
 

From 8d2d7a0c22d0e8ad33241ca356a2e1499ff31c09 Mon Sep 17 00:00:00 2001
From: Max Ghenis <mghenis@gmail.com>
Date: Fri, 23 Oct 2026 21:24:12 -0400
Subject: [PATCH 3/4] Refuse distinct allocation facts that reuse a key

Address the #1375 review (GPT-6.1 Sol, REQUEST_CHANGES at 12b590a1):

- Allocation fact resolution deduplicated by aggregate_fact_key alone, so a
  growth fact reusing an atom's key could replace a validated atom on the
  direct compile path (186.56 became 104.88). It now keeps a fact reused
  across operand roles but refuses a different fact sharing the key. The
  review's counterexample runs on both compile paths; with the check
  disabled the direct case fails.
- The commutation property now scales the Census total independently as
  q*T rather than from scaled leaves. Scaling commutes with allocation in
  exact arithmetic; in floating point a zero residual can round to either
  sign, and the negative case still refuses without clipping. Two explicit
  examples (counts 1, 2 at q=0.55 and 0.58) pin both signs.
- The low-level activation guard documents that resolution markers are
  trusted declarations there; receipt validation and transport authenticate
  a resolved document.
- The NZ plan's status no longer says the gates await D1; it names the
  d1376 thresholds and says production fit evidence does not exist yet.

Tests (-n 0, one file per run): test_ledger_allocated_residual.py 91
passed; test_ledger_targets.py 436; test_nz_target_references.py 46;
test_reference_profiles.py 28; test_transport_target_kernels.py 33;
test_country_spec.py 136; test_uk_ledger_targets.py 64. ruff check and
format clean; git diff --check clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 docs/nz-take-up-engine-plan.md                | 10 ++--
 .../src/microcosm/build/ledger_targets.py     | 20 ++++++-
 .../shared/test_ledger_allocated_residual.py  | 59 ++++++++++++++-----
 3 files changed, 69 insertions(+), 20 deletions(-)

diff --git a/docs/nz-take-up-engine-plan.md b/docs/nz-take-up-engine-plan.md
index 5a5d6a536f..1569e61cf8 100644
--- a/docs/nz-take-up-engine-plan.md
+++ b/docs/nz-take-up-engine-plan.md
@@ -21,10 +21,12 @@ inventory M5).
 The spec-only [NZ country package](../packages/microcosm-build/src/microcosm/build/nz/country_package.json)
 compiles through the shared country seam. It declares active demographic
 references and profile-resolved Census size and tenure references, with other
-unresolved target definitions parked. Production graph assembly and calibrated
-population evidence remain separate; threshold-bearing gates still read
-"awaiting D1". Donor records are US support records and are never presented as
-New Zealand microdata.
+unresolved target definitions parked. The release gates carry reviewed
+thresholds (d1376: every calibration target within 5%, demography within 2%,
+administrative anchors within 5%); no production fit evidence exists for them
+yet, and graph assembly and calibrated population evidence remain separate.
+Donor records are US support records and are never presented as New Zealand
+microdata.
 
 The package replaces the stage-era scaffold of
 [#821](https://github.com/PolicyEngine/microcosm/pull/821). It keeps #821's
diff --git a/packages/microcosm-build/src/microcosm/build/ledger_targets.py b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
index ba023498a9..d724050893 100644
--- a/packages/microcosm-build/src/microcosm/build/ledger_targets.py
+++ b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
@@ -661,6 +661,13 @@ def _require_executable_reference(reference: LedgerTargetReference) -> None:
     singleton input or become ambiguous as soon as the next cell arrived.
     Rows requiring a reference profile also carry the resolver's selection
     identity before an active status permits compilation.
+
+    Those resolution markers are trusted declarations at this layer: this
+    check sees that they are present, not that they match a resolution
+    receipt. ``reference_profiles.validate_reference_resolution`` and the
+    transport's effective-document binding authenticate a resolved document;
+    callers compiling resolved references outside transport must run that
+    validation first.
     """
 
     activation_status = reference.metadata.get("activation_status", "")
@@ -2766,8 +2773,17 @@ def _resolve_allocation_reference_facts(
         *growth,
     )
     # A published cell may serve more than one operand role. Preserve each
-    # fact once after checking every input selector's exact cardinality.
-    return tuple({_fact_key(fact): fact for fact in labelled_facts}.values())
+    # fact once after checking every input selector's exact cardinality, but
+    # never let a different fact that reuses a key replace a validated one.
+    by_key: dict[str, object] = {}
+    for fact in labelled_facts:
+        key = _fact_key(fact)
+        kept = by_key.setdefault(key, fact)
+        if kept is not fact and kept != fact:
+            raise ValueError(
+                f"{prefix} distinct facts share aggregate_fact_key {key!r}."
+            )
+    return tuple(by_key.values())
 
 
 def _allocated_residual_value(
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
index 3475a4d882..8066975f0b 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
@@ -9,7 +9,7 @@
 from fractions import Fraction
 
 import pytest
-from hypothesis import HealthCheck, given, settings
+from hypothesis import HealthCheck, example, given, settings
 from hypothesis import strategies as st
 
 from microcosm.build.ledger_targets import (
@@ -523,6 +523,24 @@ def test_growth_roles_may_reuse_total_or_atom_without_double_counting(
         _compile([*facts, deepcopy(facts[0])], reference, direct)
 
 
+@pytest.mark.parametrize("direct", [False, True])
+def test_distinct_fact_reusing_an_atom_key_cannot_replace_the_atom(direct):
+    # Review counterexample: a growth numerator that reuses atom 1's key
+    # passes its own selector, so key-only deduplication would swap the
+    # 72-household atom for the 66-person growth fact.
+    facts, reference = _case(group=(1, 2))
+    facts[-2]["value"] = 66
+    facts[-1]["value"] = 60
+    assert _compile(facts, reference, direct).value == pytest.approx(186.56)
+    facts[-2]["aggregate_fact_key"] = facts[0]["aggregate_fact_key"]
+    operands = deepcopy(list(reference.value_operands))
+    operands[-2]["aggregate_fact_key"] = facts[0]["aggregate_fact_key"]
+    reference = replace(reference, value_operands=tuple(operands))
+    match = "distinct facts share" if direct else "distinct facts share|exactly once"
+    with pytest.raises(ValueError, match=match):
+        _compile(facts, reference, direct)
+
+
 # Cold local-constant discovery on the shared build machine can dominate data
 # generation; retain every generated example and numerical assertion.
 @settings(
@@ -538,6 +556,9 @@ def test_growth_roles_may_reuse_total_or_atom_without_double_counting(
     group_mask=st.integers(1, 255),
     numerator=st.integers(51, 200),
 )
+# Independently scaled totals leave a rounding residual of each sign.
+@example(counts=[1, 2], residual=0, recipient_mask=3, group_mask=1, numerator=55)
+@example(counts=[1, 2], residual=0, recipient_mask=3, group_mask=1, numerator=58)
 def test_exact_rational_oracle_for_partitions_recipients_groups_and_growth(
     counts, residual, recipient_mask, group_mask, numerator
 ):
@@ -585,21 +606,31 @@ def test_exact_rational_oracle_for_partitions_recipients_groups_and_growth(
         rel_tol=1e-12,
         abs_tol=1e-7,
     )
-    # Scaling the Census total and leaves commutes with allocation. The
-    # separate growth pair is omitted on this path so scaling happens once.
+    # Scaling the Census total and leaves commutes with allocation in exact
+    # arithmetic. The scaled total is computed independently as q*T, not from
+    # the scaled leaves, and the separate growth pair is omitted so scaling
+    # happens once. In floating point a zero residual can round to a tiny
+    # negative one (counts 1, 2 at q=0.55); that must still refuse, never clip.
+    q = Fraction(numerator, 100)
+    scaled_counts = [float(x * q) for x in counts]
     scaled_facts, scaled_reference = _case(
-        [Fraction(x * numerator, 100) for x in counts],
-        Fraction(residual * numerator, 100),
-        recipients,
-        group,
-        growth=False,
-    )
-    assert math.isclose(
-        _compile(scaled_facts, scaled_reference).value,
-        value,
-        rel_tol=1e-12,
-        abs_tol=1e-7,
+        scaled_counts, 0, recipients, group, growth=False
     )
+    scaled_facts[len(counts)]["value"] = float((sum(counts) + residual) * q)
+    scaled_residual = scaled_facts[len(counts)]["value"] - math.fsum(scaled_counts)
+    if scaled_residual < 0:
+        with pytest.raises(ValueError, match="negative.*residual"):
+            _compile(scaled_facts, scaled_reference)
+    elif scaled_residual > 0 and not mass:
+        with pytest.raises(ValueError, match="positive recipient mass"):
+            _compile(scaled_facts, scaled_reference)
+    else:
+        assert math.isclose(
+            _compile(scaled_facts, scaled_reference).value,
+            value,
+            rel_tol=1e-12,
+            abs_tol=1e-7,
+        )
 
 
 @settings(

From 10ee4a5067bbebaf1314c761982c495b4a99d5f9 Mon Sep 17 00:00:00 2001
From: Max Ghenis <mghenis@gmail.com>
Date: Fri, 23 Oct 2026 22:13:05 -0400
Subject: [PATCH 4/4] Compare base facts with their atoms before deduplication

The #1375 delta review (GPT-6.1 Sol, REQUEST_CHANGES at 8d2d7a0c) found a
second way past 8d2d7a0c's check. Atoms whose keys matched a base fact were
dropped before the content comparison, so a base selector pinned to a
different record that reused atom 1's key (value 66, not 72) displaced the
validated atom on the direct compile path: 76.8 became 72.33. Every base,
atom, total and growth fact now enters the content-aware comparison, so a
distinct fact sharing any selected key refuses, while a genuine same-fact
reuse across roles still compiles.

The reviewer's counterexample is a test on both compile paths; restoring
the old atom filter turns its direct case red, and the four genuine-reuse
controls still pass.

Tests (-n 0, one file per run): test_ledger_allocated_residual.py 93
passed; test_ledger_targets.py 436; test_nz_target_references.py 46.
ruff check and format clean; git diff --check clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../src/microcosm/build/ledger_targets.py     |  8 +++---
 .../shared/test_ledger_allocated_residual.py  | 26 +++++++++++++++++++
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/packages/microcosm-build/src/microcosm/build/ledger_targets.py b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
index d724050893..3af241ca1c 100644
--- a/packages/microcosm-build/src/microcosm/build/ledger_targets.py
+++ b/packages/microcosm-build/src/microcosm/build/ledger_targets.py
@@ -2763,18 +2763,16 @@ def _resolve_allocation_reference_facts(
         if _numeric_fact_value(fact, reference) < 0:
             raise ValueError(f"{prefix} requires finite nonnegative counts.")
         _validate_fact_aggregation(fact, reference)
-    base_keys = {_fact_key(fact) for fact in base}
     labelled_facts = (
         *sorted(base, key=_fact_key),
-        *sorted(
-            (fact for fact in atoms if _fact_key(fact) not in base_keys), key=_fact_key
-        ),
+        *sorted(atoms, key=_fact_key),
         total,
         *growth,
     )
     # A published cell may serve more than one operand role. Preserve each
     # fact once after checking every input selector's exact cardinality, but
-    # never let a different fact that reuses a key replace a validated one.
+    # never let a different fact that reuses a key replace a validated one:
+    # every base, atom, total and growth fact enters this comparison.
     by_key: dict[str, object] = {}
     for fact in labelled_facts:
         key = _fact_key(fact)
diff --git a/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
index 8066975f0b..d2dccbcd42 100644
--- a/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
+++ b/packages/microcosm-build/tests/engine_free/shared/test_ledger_allocated_residual.py
@@ -541,6 +541,32 @@ def test_distinct_fact_reusing_an_atom_key_cannot_replace_the_atom(direct):
         _compile(facts, reference, direct)
 
 
+@pytest.mark.parametrize("direct", [False, True])
+def test_distinct_base_fact_reusing_an_atom_key_cannot_replace_the_atom(direct):
+    # Delta-review counterexample: a base selector pinned to a different
+    # record that reuses atom 1's key and carries 66 instead of 72 would
+    # otherwise displace the validated atom (76.8 became 72.33).
+    facts, reference = _case(growth=False)
+    assert _compile(facts, reference, direct).value == pytest.approx(76.8)
+    facts[0]["source_record_id"] = "original-atom-record"
+    alternate = deepcopy(facts[0])
+    alternate["source_record_id"] = "different-base-record"
+    alternate["value"] = 66
+    facts.append(alternate)
+    selector = deepcopy(reference.ledger_selector)
+    selector["source_record_id"] = alternate["source_record_id"]
+    operands = deepcopy(list(reference.value_operands))
+    operands[2]["member_selectors"][0]["source_record_id"] = facts[0][
+        "source_record_id"
+    ]
+    reference = replace(
+        reference, ledger_selector=selector, value_operands=tuple(operands)
+    )
+    match = "distinct facts share" if direct else "distinct facts share|exactly once"
+    with pytest.raises(ValueError, match=match):
+        _compile(facts, reference, direct)
+
+
 # Cold local-constant discovery on the shared build machine can dominate data
 # generation; retain every generated example and numerical assertion.
 @settings(