diff --git a/resources/schema/MetaVariables.json b/resources/schema/MetaVariables.json
index 2e3a690a7..5826ea452 100644
--- a/resources/schema/MetaVariables.json
+++ b/resources/schema/MetaVariables.json
@@ -29,6 +29,9 @@
     {
       "const": "define_dataset_structure"
     },
+    {
+      "const": "define_dataset_variables"
+    },
     {
       "const": "define_variable_allowed_terms"
     },
diff --git a/resources/schema/MetaVariables.md b/resources/schema/MetaVariables.md
index 043dbaa72..044ee59f0 100644
--- a/resources/schema/MetaVariables.md
+++ b/resources/schema/MetaVariables.md
@@ -42,6 +42,10 @@ ItemGroupDef.Domain
 
 ItemGroupDef.Structure
 
+## define_dataset_variables
+
+List of ItemGroupDef.ItemRef.ItemDef.Name, ordered by XML document order (implicit ordering, not OrderNumber)
+
 ## define_variable_allowed_terms
 
 ItemGroupDef.ItemDef.CodeList.CodeListItem.Decode.TranslatedText