How To Fix /IWBEP/CM_V4_RUNTIME145 - Target operation return is not primitive

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 145

• Message text: Target operation return is not primitive

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME145 - Target operation return is not primitive ?

  The SAP error message /IWBEP/CM_V4_RUNTIME145 Target operation return is not primitive typically occurs in the context of SAP Gateway and OData services. This error indicates that the return type of an operation (such as a function import or an action) is not a primitive type, which is expected by the OData service.
  Cause:
  
  Non-Primitive Return Type: The operation is defined to return a complex type or an entity type instead of a primitive type (like string, integer, etc.). OData services expect certain operations to return primitive types, especially when they are defined as function imports.
  Service Definition Issues: There may be a mismatch between the service definition in the OData metadata and the actual implementation of the service.
  Incorrect Annotations: The annotations in the service definition might not be correctly set, leading to confusion about the expected return type.
  
  Solution:
  
  
  Check the Operation Definition: Review the definition of the operation in the OData service. Ensure that the return type is set to a primitive type if that is what is expected. If the operation is supposed to return a complex type, ensure that it is defined correctly in the service.
  
  
  Modify the Return Type: If the operation is intended to return a primitive type, modify the implementation to ensure that it does so. This may involve changing the return type in the method signature and ensuring that the data returned is of the correct type.
  
  
  Update Service Metadata: If changes are made to the operation, ensure that the service metadata is updated. You can do this by regenerating the service or reactivating it in the SAP Gateway.
  
  
  Check Annotations: Verify that the annotations in the service definition are correct. If the operation is meant to return a complex type, ensure that it is annotated properly in the service definition.
  
  
  Test the Service: After making the necessary changes, test the OData service to ensure that the error is resolved and that the operation behaves as expected.
  
  
  Related Information:
  
  OData Service Documentation: Review the OData service documentation for guidelines on defining operations and return types.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service operates correctly.