How To Fix /IWBEP/CM_V4_MED035 - Function parameter '&1' already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 035

• Message text: Function parameter '&1' already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED035 - Function parameter '&1' already exists ?

  The SAP error message /IWBEP/CM_V4_MED035 Function parameter '&1' already exists typically occurs in the context of OData service development, particularly when defining or modifying the service's metadata. This error indicates that there is a conflict with the naming of function parameters in your OData service.
  Cause:
  The error is caused by attempting to define a function parameter with a name that already exists in the same context. This can happen if:
  
  You are trying to add a new parameter to a function import or action that has already been defined with the same name.
  There is a duplicate parameter name in the service definition, possibly due to copy-pasting or merging changes from different sources.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Function Parameters: Review the function import or action definition in your OData service. Look for any parameters that have the same name as the one mentioned in the error message (&1).
  
  
  Rename Parameters: If you find a duplicate parameter, consider renaming one of the parameters to ensure that all parameter names are unique within the same function import or action.
  
  
  Clear Cache: After making changes, clear the cache of the OData service. You can do this by:
  
  Using transaction code /IWFND/MAINT_SERVICE to maintain your OData service and re-activate it.
  Clearing the cache in the backend using transaction code /IWBEP/REG_SERVICE.
  
  
  
  Re-generate Metadata: If applicable, regenerate the metadata for your OData service to ensure that all changes are reflected correctly.
  
  
  Test the Service: After making the necessary changes, test the OData service to ensure that the error is resolved and that the service behaves as expected.
  
  
  Related Information:
  
  OData Service Development: Familiarize yourself with the OData service development process in SAP, including how to define function imports and actions.
  SAP Notes: Check for any relevant SAP Notes that might address similar issues or provide additional guidance.
  Documentation: Refer to the official SAP documentation for OData services, which provides best practices and guidelines for defining service parameters.
  
  By following these steps, you should be able to resolve the error and successfully define your OData service parameters without conflicts.