The value field and externalValue field are mutually exclusive. (OAI#2801)

https://spec.openapis.org/oas/v3.1.0#example-object

Author: karenetheridge

schemas/v3.1/schema.json

@@ -883,6 +883,12 @@
           "format": "uri"
         }
       },
+      "not": {
+        "required": [
+          "value",
+          "externalValue"
+        ]
+      },
       "$ref": "#/$defs/specification-extensions",
       "unevaluatedProperties": false
     },

schemas/v3.1/schema.yaml

@@ -607,6 +607,10 @@ $defs:
       externalValue:
         type: string
         format: uri
+    not:
+      required:
+      - value
+      - externalValue
     $ref: '#/$defs/specification-extensions'
     unevaluatedProperties: false