How To Fix /IWBEP/CM_SBMC_MPC001 - Complex Type not specified

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 001

• Message text: Complex Type not specified

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_SBMC_MPC001 - Complex Type not specified ?

  The SAP error message /IWBEP/CM_SBMC_MPC001 Complex Type not specified typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a problem with the definition of a complex type in the OData model, which is essential for the proper functioning of the service.
  Cause:
  
  Missing Complex Type Definition: The error usually arises when a complex type that is expected in the OData service is not defined in the metadata or is incorrectly referenced.
  Model Configuration Issues: There may be issues in the model configuration, such as incorrect associations or navigation properties that reference non-existent complex types.
  Service Registration Issues: The OData service may not be properly registered or activated in the SAP Gateway.
  Versioning Issues: If there are multiple versions of the service, the wrong version might be called, leading to missing definitions.
  
  Solution:
  
  
  Check Complex Type Definitions: 
  
  Go to the Data Model in the SAP Gateway Service Builder (transaction code SEGW).
  Ensure that all complex types are correctly defined and that they are included in the service's metadata.
  
  
  
  Review Associations and Navigation Properties: 
  
  Verify that all associations and navigation properties in your entity types correctly reference existing complex types.
  Make sure that the names and types match exactly.
  
  
  
  Regenerate the Service: 
  
  After making changes to the model, regenerate the service by right-clicking on the service in the Service Builder and selecting "Generate".
  Activate the service again to ensure that all changes are applied.
  
  
  
  Check Service Registration: 
  
  Use transaction code /IWFND/MAINT_SERVICE to check if the service is properly registered and activated.
  If necessary, re-register the service.
  
  
  
  Test the Service: 
  
  Use the SAP Gateway Client (transaction code /IWFND/GW_CLIENT) to test the OData service and ensure that it is functioning as expected.
  
  
  
  Check for Version Conflicts: 
  
  If you have multiple versions of the service, ensure that you are calling the correct version that contains the necessary complex type definitions.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP Gateway documentation for guidance on defining complex types and troubleshooting OData services.
  Community Forums: Consider searching or posting on SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the issue related to the /IWBEP/CM_SBMC_MPC001 Complex Type not specified error in your SAP environment.