How To Fix /IWFND/CM_DESIGNTIME021 - Specified operation is not Web service operation

/IWFND/CM_DESIGNTIME021 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 021

• Message text: Specified operation is not Web service operation

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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/IWFND/CM_DESIGNTIME021 - Details

• The SAP error message /IWFND/CM_DESIGNTIME021: Specified operation is not a Web service operation typically occurs in the context of SAP Gateway and OData services. This error indicates that the operation you are trying to invoke is not recognized as a valid web service operation within the context of the OData service.
  Causes:
  
  Incorrect Operation Name: The operation name specified in the request does not match any of the defined operations in the OData service.
  Service 
  Configuration Issues: The OData service may not be properly configured or activated in the SAP Gateway.
  Service Versioning: If there are multiple versions of the service, the operation may exist in a different version than the one being called.
  Authorization Issues: The user may not have the necessary authorizations to access the specified operation.
  Service Not Registered: The OData service might not be registered or activated in the SAP Gateway.
  
  Solutions:
  
  Check Operation Name: Verify that the operation name in your request matches