How To Fix /IWBEP/CM_V4_MED209 - Complex type: EDM name '&1' already used in operation

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 209

• Message text: Complex type: EDM name '&1' already used in operation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED209 - Complex type: EDM name '&1' already used in operation ?

  The SAP error message /IWBEP/CM_V4_MED209 indicates that there is a conflict with the naming of complex types in your OData service. Specifically, it means that the Entity Data Model (EDM) name for a complex type is being reused in an operation, which is not allowed.
  Cause:
  This error typically occurs when:
  
  You have defined a complex type with the same name in multiple places within your OData service.
  There is a naming conflict due to the reuse of complex types across different entities or operations.
  The service definition has not been properly updated or regenerated after changes were made.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Duplicate Names:
  
  Review your OData service definition to identify any complex types that have the same name. Ensure that each complex type has a unique name.
  
  
  
  Rename Complex Types:
  
  If you find duplicate complex types, rename them to ensure uniqueness. This can be done in the service definition or the underlying data model.
  
  
  
  Regenerate the Service:
  
  After making changes to the complex types, regenerate the OData service. This can often be done through the SAP Gateway Service Builder (transaction code SEGW).
  
  
  
  Clear Cache:
  
  Clear any caches that might be holding onto the old definitions. This can include the OData service cache or the browser cache if you are testing the service through a web interface.
  
  
  
  Check for References:
  
  Ensure that all references to the complex types in your service operations are updated to reflect any name changes.
  
  
  
  Test the Service:
  
  After making the necessary changes, test the OData service to ensure that the error has been resolved and that the service is functioning as expected.
  
  
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP can help in troubleshooting issues related to service definitions.
  SAP Gateway: Familiarize yourself with the SAP Gateway and its tools, such as the Service Builder (SEGW), to manage and define OData services effectively.
  EDM (Entity Data Model): Knowledge of the EDM and how complex types are defined and used within it is crucial for resolving naming conflicts.
  
  If the issue persists after following these steps, consider checking SAP Notes or reaching out to SAP support for further assistance.