diff --git a/OpenAPI/TS28623_ComDefs.yaml b/OpenAPI/TS28623_ComDefs.yaml
index 7f3b394e6358a5218ade1988b6a34fed7b9b826c..000a58dbda76acd2f38fa05bf75c188164adf96e 100755
--- a/OpenAPI/TS28623_ComDefs.yaml
+++ b/OpenAPI/TS28623_ComDefs.yaml
@@ -143,6 +143,9 @@ components:
 
     Fqdn:
       type: string
+      pattern: '^([0-9A-Za-z]([-0-9A-Za-z]{0,61}[0-9A-Za-z])?\.)+[A-Za-z]{2,63}\.?$'
+      minLength: 4
+      maxLength: 253
     Ipv4Addr:
       type: string
       pattern: '^(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$'
@@ -187,6 +190,12 @@ components:
           $ref: '#/components/schemas/FullTime'
 
     AdministrativeState:
+      type: string
+      enum:
+        - LOCKED
+        - UNLOCKED
+        - SHUTTINGDOWN
+    BasicAdministrativeState:
       type: string
       enum:
         - LOCKED