diff --git a/OpenAPI/TS28623_TraceControlNrm.yaml b/OpenAPI/TS28623_TraceControlNrm.yaml
index f246bcb14d6232d9e49c7f48d06e1d8b380139d7..770f3d1c4cf1c35143536aaab74b4a39f7a4c391 100644
--- a/OpenAPI/TS28623_TraceControlNrm.yaml
+++ b/OpenAPI/TS28623_TraceControlNrm.yaml
@@ -1393,7 +1393,9 @@ components:
       type: object
       properties:
         ueCoreMeasurements:
-          type: string
+          type: array 
+          items:
+            type: string
         ueCoreMeasGranularityPeriod:
           type: integer
         nfTypeToMeasure:
@@ -1453,6 +1455,8 @@ components:
           $ref: 'TS28623_GenericNrm.yaml#/components/schemas/NpnId-Type'
         listOfTraceMetrics:
           type: array
+          items:
+            type: string
         traceReportingConsumerUri:
           $ref: 'TS28623_ComDefs.yaml#/components/schemas/Uri'
         traceCollectionEntityIpAddress: