How To Fix /IWBEP/CM_V4_MED356 - Return type '&1' of operation '&2' not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 356

• Message text: Return type '&1' of operation '&2' not found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED356 - Return type '&1' of operation '&2' not found ?

  The SAP error message /IWBEP/CM_V4_MED356 indicates that there is an issue with the return type of an operation in an OData service. Specifically, it means that the return type specified for a particular operation (like a function import or an action) is not found or is not defined correctly in the service metadata.
  Cause:
  
  Missing Return Type Definition: The return type specified in the operation might not be defined in the service's metadata.
  Typographical Errors: There could be a typo in the return type name or the operation name.
  Service Metadata Issues: The service metadata might not be properly generated or updated, leading to inconsistencies.
  Changes in Data Model: If there have been recent changes to the data model (like adding or removing entities), the OData service might not reflect those changes.
  Activation Issues: The OData service might not be activated properly in the SAP Gateway.
  
  Solution:
  
  Check Metadata: Verify the service metadata to ensure that the return type is correctly defined. You can access the metadata by appending $metadata to the service URL.
  Update Service: If the return type is missing, you may need to update the service definition in the SAP Gateway. This can be done using transaction code SEGW (Service Builder).
  Regenerate the Service: If there have been changes to the underlying data model, regenerate the OData service to ensure that all definitions are up to date.
  Check for Typos: Double-check the operation name and return type for any typographical errors.
  Activate the Service: Ensure that the OData service is activated. You can do this in transaction IWFND/MAINT_SERVICE.
  Check for Dependencies: Ensure that any dependent objects (like entities or types) are also correctly defined and activated.
  
  Related Information:
  
  Transaction Codes:
  
  SEGW: Service Builder for OData services.
  IWFND/MAINT_SERVICE: Maintenance of OData services.
  SE11: Data Dictionary to check the underlying data model.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance.
  OData Documentation: Review SAP documentation on OData services for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message /IWBEP/CM_V4_MED356.