diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/ErrorCode.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/ErrorCode.java
index 34bf525b..2c86b476 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/ErrorCode.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/ErrorCode.java
@@ -5,7 +5,6 @@
 @Getter
 public enum ErrorCode {
     ELASTICSEARCH_UNAVAILABLE("DOWN", "E1000", "Dependency unavailable"),
-    MISSING_CO_CORE_INDEX("DEGRADED", "E1001","Missing cloud optimized index"),
     MISSING_VOCAB_INDEX("DEGRADED", "E1002","Missing vocab index"),
     MISSING_CORE_INDEX("DOWN", "E1003","Missing core index");