How To Fix /IWBEP/CM_V4_MED254 - The advertised operation '&1' of property '&2' in CT '&3' does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 254

• Message text: The advertised operation '&1' of property '&2' in CT '&3' does not exist

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED254 - The advertised operation '&1' of property '&2' in CT '&3' does not exist ?

  The SAP error message /IWBEP/CM_V4_MED254 typically indicates that there is an issue with the OData service configuration, specifically related to the metadata of the service. This error occurs when an operation that is expected to be available for a certain property in a certain context (CT) is not defined or does not exist.
  Cause:
  
  Missing Operation: The operation (like GET, POST, PUT, DELETE, etc.) that is being called on the specified property does not exist in the service definition.
  Incorrect Metadata: The metadata for the OData service may not be correctly defined or may not include the operation for the specified property.
  Service Versioning: If there are multiple versions of the service, the operation may exist in one version but not in another.
  Model Configuration: The data model may not be correctly configured to expose the required operations for the specified property.
  
  Solution:
  
  Check Service Metadata: Use the OData service URL (usually ending with $metadata) to check the metadata and ensure that the operation for the specified property exists.
  Update Service Definition: If the operation is missing, you may need to update the service definition in the backend (e.g., using SEGW transaction in SAP Gateway) to include the required operation.
  Regenerate the Service: If changes were made to the data model, regenerate the OData service to ensure that the latest changes are reflected.
  Check Annotations: Ensure that the annotations for the property are correctly defined to expose the operations.
  Test with Different Clients: Sometimes, the issue may be client-specific. Test the service with different clients (like Postman or SAP Gateway Client) to see if the issue persists.
  Review Logs: Check the application logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  Related Information:
  
  OData Service Documentation: Review the official SAP documentation on OData services for best practices and guidelines on defining operations and properties.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  SAP Notes: Search for relevant SAP Notes that might address known issues or bugs related to the error message.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.