How To Fix /IWBEP/CM_V4_MED386 - Value control property '&1' for '&2' of entity type '&3' is not primitive

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 386

• Message text: Value control property '&1' for '&2' of entity type '&3' 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_MED386 - Value control property '&1' for '&2' of entity type '&3' is not primitive ?

  The SAP error message /IWBEP/CM_V4_MED386 indicates that there is an issue with the value control property of an entity type in an OData service. Specifically, the error states that the value control property specified is not a primitive type, which is required for certain operations in OData services.
  Cause:
  
  Non-Primitive Type: The error typically occurs when the value control property is expected to be a primitive type (like String, Int, Boolean, etc.), but it is defined as a complex type or collection in the metadata of the OData service.
  Incorrect Metadata Definition: The entity type might have been incorrectly defined in the OData service metadata, leading to the system expecting a primitive type where it is not.
  Service Implementation Issues: There may be issues in the implementation of the OData service, such as incorrect annotations or configurations.
  
  Solution:
  
  Check Entity Type Definition: Review the definition of the entity type in the OData service. Ensure that the value control property is defined as a primitive type in the metadata.
  Update Metadata: If the property is indeed a complex type or collection, consider updating the service metadata to reflect the correct type. This may involve modifying the underlying data model or the OData service implementation.
  Review Annotations: Check the annotations in the OData service to ensure that they are correctly defined and that they match the expected types.
  Regenerate Service: If changes are made to the underlying data model or entity definitions, regenerate the OData service to ensure that the changes are reflected in the service metadata.
  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 Metadata: Understanding the structure of OData service metadata is crucial. You can access the metadata by appending $metadata to the service URL.
  SAP Gateway: Familiarize yourself with SAP Gateway concepts, as it plays a significant role in OData service creation and management.
  Debugging Tools: Use tools like SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test and debug OData services.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance related to this error message.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.