diff --git a/OpenAPI/TS28561_NdtNrm.yaml b/OpenAPI/TS28561_NdtNrm.yaml
index 93419f7ed4de0107bc78ce8a6edc3448f178f3d1..b8827f21a797a4befaab061f7c91b09bc3d4fcd3 100644
--- a/OpenAPI/TS28561_NdtNrm.yaml
+++ b/OpenAPI/TS28561_NdtNrm.yaml
@@ -117,7 +117,8 @@ components:
         - NETWORK_CONFIGURATIONS_VERIFICATION
         - AUTOMATION_CONFIGURATION_VERIFICATION
         - ML_TRAINING_DATA_GENERATION
-        - USER_EXPERIENCE_DATA_GENERATION        
+        - USER_EXPERIENCE_DATA_GENERATION
+        - PERFORMANCE_PREEVALUATION        
     NDTFunctionScope:  
       type: object
       properties: