diff --git a/models/catalog-items-api-model/catalogItemsV0.json b/models/catalog-items-api-model/catalogItemsV0.json
index 138a4df..d3b3dec 100644
--- a/models/catalog-items-api-model/catalogItemsV0.json
+++ b/models/catalog-items-api-model/catalogItemsV0.json
@@ -1585,6 +1585,10 @@
       "description": "Specific variations of the item.",
       "type": "object",
       "properties": {
+        "Identifiers": {
+          "description": "The identifiers that uniquely identify the item that is related.",
+          "$ref": "#/definitions/IdentifierType"
+        },
         "Color": {
           "description": "The color variation of the item.",
           "type": "string"