How To Fix /IWBEP/CM_V4_RUNTIME140 - Target parameter '&1' must be primitive collection

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 140

• Message text: Target parameter '&1' must be primitive collection

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME140 - Target parameter '&1' must be primitive collection ?

  The SAP error message /IWBEP/CM_V4_RUNTIME140 indicates that there is an issue with the data type of a target parameter in an OData service. Specifically, the error message states that the target parameter must be a "primitive collection," which means that the parameter is expected to be a collection of primitive data types (like strings, integers, etc.) rather than a complex type or a single value.
  Cause:
  
  
  Incorrect Data Type: The parameter being passed to the OData service is not of the expected primitive collection type. This could happen if:
  
  The parameter is defined as a complex type in the OData service.
  The client is sending a single value instead of an array or collection.
  The parameter is incorrectly mapped in the service definition.
  
  
  
  Service Definition Issues: The OData service might have been incorrectly defined in the service metadata, leading to mismatches between the expected and actual data types.
  
  
  Client-Side Issues: The client application (e.g., an SAP Fiori app or another frontend) may be sending the wrong data format or structure.
  
  
  Solution:
  
  
  Check the OData Service Definition:
  
  Review the service metadata (EDMX file or service document) to ensure that the parameter is defined as a primitive collection.
  If the parameter is defined as a complex type, consider changing it to a primitive collection if that aligns with your business logic.
  
  
  
  Validate Client-Side Data:
  
  Ensure that the client application is sending the correct data type. If the parameter is expected to be a collection, make sure that the client sends an array of values.
  If the client is sending a single value, modify the client code to wrap the value in an array.
  
  
  
  Debugging:
  
  Use tools like Postman or SAP Gateway Client to test the OData service directly. This can help isolate whether the issue is on the server side or client side.
  Check the logs in the SAP Gateway to see if there are any additional error messages or stack traces that provide more context.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for OData services to ensure that you are following best practices for defining and consuming OData services.
  
  
  
  Testing:
  
  After making changes, test the OData service again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and its data types can help in troubleshooting issues related to data formats.
  SAP Gateway: Familiarize yourself with SAP Gateway concepts, as it plays a crucial role in exposing OData services.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other developers 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 solution to resolve it.