Proposal for a Common.ValidationFunction on parameters and action

vocabularies/Common.json

@@ -1282,6 +1282,14 @@
       "@Common.Experimental": true,
       "@Core.IsURL": true,
       "@Core.Description": "Base URL for WebSocket connections"
+    },
+    "ValidationFunction": {
+      "$Kind": "Term",
+      "$Type": "Common.QualifiedName",
+      "$AppliesTo": ["Parameter", "Action", "Function"],
+      "@Common.Experimental": true,
+      "@Core.Description": "Function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not",
+      "@Core.LongDescription": "The qualified name of an unbound function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not."
     }
   }
 }

vocabularies/Common.md

@@ -110,6 +110,7 @@ Term|Type|Description
 [mediaUploadLink](./Common.xml#L1402:~:text=<Term%20Name="-,mediaUploadLink,-") *([Experimental](Common.md#Experimental))*|URL|<a name="mediaUploadLink"></a>URL for uploading new media content to a Document Management Service<br>In contrast to the `@odata.mediaEditLink` this URL allows to upload new media content without directly changing a stream property or media resource. The upload request typically uses HTTP POST with `Content-Type: multipart/form-data` following RFC 7578. The upload request must contain one multipart representing the content of the file. The `name` parameter in the `Content-Disposition` header (as described in RFC 7578) is irrelevant, but the `filename` parameter is expected. If the request succeeds the response will contain a JSON body of `Content-Type: application/json` with a JSON property `readLink`. The newly uploaded media resource can be linked to the stream property by changing the `@odata.mediaReadLink` to the value of this `readLink` in a subsequent PATCH request to the OData entity.
 [PrimitivePropertyPath](./Common.xml#L1417:~:text=<Term%20Name="-,PrimitivePropertyPath,-") *([Experimental](Common.md#Experimental))*|[Tag](https://github.com/oasis-tcs/odata-vocabularies/blob/main/vocabularies/Org.OData.Core.V1.md#Tag)|<a name="PrimitivePropertyPath"></a>A term or term property with this tag whose type is (a collection of) `Edm.PropertyPath` MUST resolve to a primitive structural property
 [WebSocketBaseURL](./Common.xml#L1422:~:text=<Term%20Name="-,WebSocketBaseURL,-") *([Experimental](Common.md#Experimental))*|URL|<a name="WebSocketBaseURL"></a>Base URL for WebSocket connections
+[ValidationFunction](./Common.xml#L1428:~:text=<Term%20Name="-,ValidationFunction,-") *([Experimental](Common.md#Experimental))*|[QualifiedName](#QualifiedName)|<a name="ValidationFunction"></a>Function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not<br>The qualified name of an unbound function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not.
 
 <a name="TextFormatType"></a>
 ## [TextFormatType](./Common.xml#L111:~:text=<EnumType%20Name="-,TextFormatType,-")

vocabularies/Common.xml

@@ -1425,6 +1425,14 @@ If the request succeeds the response will contain a JSON body of `Content-Type:
         <Annotation Term="Core.Description" String="Base URL for WebSocket connections" />
       </Term>
 
+      <Term Name="ValidationFunction" Type="Common.QualifiedName" Nullable="false" AppliesTo="Parameter Action Function">
+        <Annotation Term="Common.Experimental" />
+        <Annotation Term="Core.Description" String="Function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not" />
+        <Annotation Term="Core.LongDescription">
+          <String>The qualified name of an unbound function that validates whether the parameter value, or parameter values (in case of Action and Function) is correct or not.</String>
+        </Annotation>
+      </Term>
+
     </Schema>
   </edmx:DataServices>
 </edmx:Edmx>