Merge 6183f2410f into 67743d5715

changelogs/application_service/newsfragments/2130.feature

@@ -1 +0,0 @@
-Correct null value handling for the AS Registration's `url` property.

data/api/application-service/definitions/registration.yaml

@@ -19,7 +19,7 @@ properties:
     type: string
     description: A unique, user-defined ID of the application service which will never change.
   url:
-    type: ["null", "string"]
+    type: string
     description: The URL for the application service. May include a path after the domain name. Optionally set to null if no traffic is required.
   as_token:
     type: string