How To Fix /IWBEP/CM_V4_MED034 - Function parameter '&1' not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 034

• Message text: Function parameter '&1' not found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED034 - Function parameter '&1' not found ?

  The SAP error message /IWBEP/CM_V4_MED034 Function parameter '&1' not found typically occurs in the context of OData services when there is an issue with the parameters being passed to a function import in an OData service. This error indicates that the specified function parameter (represented by &1) is not recognized or does not exist in the context of the OData service being called.
  Causes:
  
  Incorrect Parameter Name: The parameter name being passed in the OData request does not match any of the defined parameters in the corresponding function import.
  Missing Parameter: The function import may require a parameter that is not being provided in the request.
  Service Metadata Issues: The OData service metadata may not be correctly defined or may not be up to date, leading to discrepancies between the expected and actual parameters.
  Version Mismatch: There may be a version mismatch between the client and server, where the client is expecting a different set of parameters than what the server provides.
  
  Solutions:
  
  Check Parameter Names: Verify that the parameter names in the OData request match exactly with those defined in the function import. Pay attention to case sensitivity and spelling.
  Review Function Import Definition: Go to the SAP Gateway Service Builder (transaction code SEGW) and check the definition of the function import to ensure that all required parameters are correctly defined.
  Update Service Metadata: If there have been changes to the function import or its parameters, regenerate the service metadata. You can do this by reactivating the service in the Service Builder.
  Test with Postman or SAP Gateway Client: Use tools like Postman or the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to manually test the OData service and ensure that the parameters are being sent correctly.
  Check for Versioning Issues: Ensure that the client application is compatible with the version of the OData service being used. If there are multiple versions of the service, make sure the correct one is being called.
  
  Related Information:
  
  SAP Gateway Service Builder (SEGW): This is the tool used to create and manage OData services in SAP. You can check the function imports and their parameters here.
  OData Protocol: Understanding the OData protocol can help in troubleshooting issues related to service calls and parameter passing.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_V4_MED034 error message.