How To Fix /IWBEP/CM_V4_ANNO028 - Simple value cannot be created for function parameter

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_ANNO -

• Message number: 028

• Message text: Simple value cannot be created for function parameter

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_ANNO028 - Simple value cannot be created for function parameter ?

  The SAP error message /IWBEP/CM_V4_ANNO028 typically occurs in the context of OData services when there is an issue with the data being passed to a function import or an action. This error indicates that a simple value (like a string, integer, etc.) cannot be created for a function parameter, which usually means that the data type or the value being passed does not match the expected format or type defined in the OData service.
  Causes:
  
  Data Type Mismatch: The value being passed does not match the expected data type of the function parameter. For example, passing a string when an integer is expected.
  Null or Undefined Values: Attempting to pass a null or undefined value where a simple value is required.
  Incorrect Parameter Name: The parameter name used in the request might not match the expected parameter name defined in the OData service.
  Invalid Format: The value might be in an invalid format (e.g., date formats, number formats).
  Service Metadata Issues: The OData service metadata might not be correctly defined or might be out of sync with the implementation.
  
  Solutions:
  
  Check Data Types: Verify that the values being passed to the function parameters match the expected data types as defined in the OData service metadata.
  Validate Input Values: Ensure that the values being sent are not null or undefined and are in the correct format.
  Review Parameter Names: Double-check the parameter names in your request to ensure they match those defined in the OData service.
  Inspect Service Metadata: Use the OData service's metadata endpoint (usually /$metadata) to review the expected parameters and their types.
  Debugging: If possible, use debugging tools or logs to trace the request and see the exact values being sent to the service.
  Testing with Tools: Use tools like Postman or SAP Gateway Client to test the OData service independently and see if the error persists with the same parameters.
  
  Related Information:
  
  OData Documentation: Familiarize yourself with OData standards and how to define and consume OData services.
  SAP Gateway: Understanding how SAP Gateway works can help in troubleshooting issues related to OData services.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.