diff --git a/OpenAPI/TS28623_ExternalDataMgmtNrm.yaml b/OpenAPI/TS28623_ExternalDataMgmtNrm.yaml
index 8dedab4eff73a9cd9a794b4dd17650453132381f..9e22e23e33d524916be6d08677bf9efc048fa56e 100644
--- a/OpenAPI/TS28623_ExternalDataMgmtNrm.yaml
+++ b/OpenAPI/TS28623_ExternalDataMgmtNrm.yaml
@@ -40,7 +40,6 @@ components:
           uniqueItems: true
           items:
             $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
-
 #-------- Definition of concrete IOCs --------------------------------------------
 
     ExternalDataType-Single:
@@ -53,6 +52,15 @@ components:
             properties:
               externalDataType:
                 type: string
+                example:
+                  - ELECTRONIC_MAP
+                  - CAMARA_DATA
+                  - UE_PATH
+                  - CAMERA_PHOTO
+                  - EVENT_SCHEDULE
+                  - WEATHER_FORECASTS
+                description: >-
+                  Type of external management data as defined by the implementation.
               mediaLocation: 
                 type: array
                 uniqueItems: true
diff --git a/OpenAPI/TS28623_ManagementDataCollectionNrm.yaml b/OpenAPI/TS28623_ManagementDataCollectionNrm.yaml
index 771db70cfc04cd8055fb365cdf5c7b59cdce4998..7906b5430d5d0af06229d45bd3221cd1b12f117a 100644
--- a/OpenAPI/TS28623_ManagementDataCollectionNrm.yaml
+++ b/OpenAPI/TS28623_ManagementDataCollectionNrm.yaml
@@ -34,13 +34,17 @@ components:
           $ref: '#/components/schemas/mgtDataName'
         uniqueItems: true  
     mgtDataCategory:
-      type: string
-      enum:
-        - COVERAGE
-        - CAPACITY
-        - ENERGY_EFFICIENCY
-        - MOBILITY
-        - ACCESSIBILITY
+      oneOf:
+        - type: string
+          enum:
+            - COVERAGE
+            - CAPACITY
+            - SERVICE_EXPERIENCE
+            - TRACE
+            - ENERGY_EFFICIENCY
+            - MOBILITY
+            - ACCESSIBILITY
+        - type: string 
     mgtDataName:
       type: string
     NodeFilter:
diff --git a/OpenAPI/TS28623_MnSRegistryNrm.yaml b/OpenAPI/TS28623_MnSRegistryNrm.yaml
index 104ea62955fffaacd93d9dd034be1ecf31c990e9..399c4e553aefba6efb7251673d2096634d6edd31 100644
--- a/OpenAPI/TS28623_MnSRegistryNrm.yaml
+++ b/OpenAPI/TS28623_MnSRegistryNrm.yaml
@@ -17,7 +17,7 @@ components:
       type: object
       properties:
         MnsRegistry:
-          $ref: '#/components/schemas/MnsRegistry-Single'
+          $ref: '#/components/schemas/MnsRegistry-Multiple'
     
    #-------Definition of generic IOCs ----------# 
 
@@ -200,6 +200,11 @@ components:
 
 #-------- Definition of YAML arrays for name-contained IOCs ----------------------
 
+    MnsRegistry-Multiple:
+      type: array
+      items:
+        $ref: '#/components/schemas/MnsRegistry-Single'
+
     MnsInfo-Multiple:
       type: array
       items: