How To Fix /IWBEP/CM_MGW_GENER004 - Referenced complex type '&3' not defined in EDMX/metadata file

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_GENER -

• Message number: 004

• Message text: Referenced complex type '&3' not defined in EDMX/metadata file

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_GENER004 - Referenced complex type '&3' not defined in EDMX/metadata file ?

  The SAP error message /IWBEP/CM_MGW_GENER004 indicates that there is a problem with the metadata definition in your OData service. Specifically, it states that a referenced complex type is not defined in the EDMX (Entity Data Model XML) metadata file. This can occur in various scenarios, such as when you are trying to expose an OData service that references a complex type that has not been properly defined or is missing.
  Causes:
  
  Missing Complex Type Definition: The complex type referenced in your OData service is not defined in the EDMX file.
  Typographical Errors: There may be a typo in the name of the complex type in your service definition.
  Model Changes: If the underlying data model has changed (e.g., a complex type was removed or renamed), the OData service may still reference the old definition.
  Inconsistent Metadata: The metadata might not be properly generated or updated after changes were made to the data model.
  
  Solutions:
  
  Check EDMX File: Open the EDMX file and verify that the complex type referenced in the error message is defined. If it is missing, you will need to define it.
  Update Service Definition: If the complex type has been renamed or removed, update your OData service definition to reflect the current model.
  Regenerate Metadata: If you have made changes to the data model, regenerate the metadata for your OData service. This can often be done through the SAP Gateway Service Builder (transaction code SEGW).
  Check for Typos: Ensure that there are no typographical errors in the names of the complex types in both the service definition and the EDMX file.
  Activate the Service: After making changes, ensure that the OData service is activated in the SAP Gateway.
  Check Dependencies: If the complex type is dependent on other types, ensure that all dependencies are correctly defined and activated.
  
  Related Information:
  
  Transaction Codes: Use transaction code SEGW to access the SAP Gateway Service Builder, where you can manage your OData services.
  EDMX File: The EDMX file is an XML file that describes the data model and is used by the OData service to understand the structure of the data being exposed.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  Debugging: If the issue persists, consider debugging the OData service to trace where the error is occurring and gather more context.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service is functioning correctly.