/errors/criterion_error.proto 

--- v23/errors/criterion_error.proto    2026-04-17 05:00:46.000000000 +0000
+++ v24/errors/criterion_error.proto    2026-04-17 05:00:55.000000000 +0000
@@ -587,5 +587,12 @@
     // The dimension of the Vertical Ads Item Group Rule criterion is not
     // supported for the shared set vertical type.
     VERTICAL_ADS_ITEM_GROUP_RULE_NOT_SUPPORTED_FOR_THE_VERTICAL_TYPE = 183;
+
+    // A RetailTag references a RetailFilterExpression name that does not exist.
+    RETAIL_FILTER_EXPRESSION_DOES_NOT_EXIST = 184;
+
+    // A RetailFilterExpression cannot be removed as it is still referenced by
+    // Tags.
+    RETAIL_FILTER_TAGS_REFERRING_TO_EXPRESSION = 185;
   }
 }