diff --git a/OpenAPI/TS28538_EdgeNrm.yaml b/OpenAPI/TS28538_EdgeNrm.yaml
index b837ad30fc2cf9ed5815a4c9901ec1b655493252..48032787806c3bad2ceb3856fda765c864b90e12 100644
--- a/OpenAPI/TS28538_EdgeNrm.yaml
+++ b/OpenAPI/TS28538_EdgeNrm.yaml
@@ -123,6 +123,7 @@ components:
       enum:
         - ENABLED
         - DISABLED
+        - OVERLOAD_WARNING
     ResourceReservationRequirement:
       type: object
       properties: