How To Fix /IWBEP/CM_SBMC_MPC013 - Return Entity/Complex type is not specified for function import '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 013

• Message text: Return Entity/Complex type is not specified for function import '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_SBMC_MPC013 - Return Entity/Complex type is not specified for function import '&1' ?

  The SAP error message /IWBEP/CM_SBMC_MPC013 indicates that there is an issue with a function import in an OData service where the return entity or complex type is not specified. This typically occurs in the context of SAP Gateway and OData services when defining function imports in the service's metadata.
  Cause:
  
  Missing Return Type: The function import in the OData service is defined without specifying a return type. This means that when the function is called, the system does not know what type of data to expect in response.
  Incorrect Configuration: The function import might be incorrectly configured in the service definition, leading to the absence of a return type.
  Model Issues: There may be issues with the underlying data model or the way entities and complex types are defined in the service.
  
  Solution:
  
  
  Define Return Type:
  
  Go to the Service Builder (transaction code SEGW).
  Locate the function import that is causing the error.
  Ensure that a return type (entity type or complex type) is specified for the function import. You can do this by right-clicking on the function import and selecting "Edit".
  In the properties, specify the appropriate return type.
  
  
  
  Check Metadata:
  
  After making changes, regenerate the metadata for the OData service. This can be done by right-clicking on the project and selecting "Generate Runtime Objects".
  Activate the service if it is not already activated.
  
  
  
  Test the Function Import:
  
  Use the OData service URL to test the function import and ensure that it returns the expected data.
  
  
  
  Review Documentation:
  
  Check the SAP documentation for OData services and function imports to ensure that you are following best practices.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SEGW: Service Builder for OData services.
  IWFND/MAINT_SERVICE: To maintain and activate OData services.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on function imports and return types.
  
  
  Debugging: If the issue persists, consider debugging the OData service to trace the execution and identify where the return type is not being set correctly.
  
  
  By following these steps, you should be able to resolve the error message and ensure that your OData service functions correctly.