How To Fix /IWBEP/CM_V4_MED231 - Primitive type '&1' not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 231

• Message text: Primitive type '&1' not found

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED231 - Primitive type '&1' not found ?

  The SAP error message /IWBEP/CM_V4_MED231 Primitive type '&1' not found typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find a specified primitive type in the OData service definition. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Missing Primitive Type: The specified primitive type (e.g., Edm.String, Edm.Int32, etc.) is not defined in the OData service metadata.
  Incorrect Data Model: The data model might be incorrectly defined, leading to references to non-existent types.
  Service Activation Issues: The OData service may not be properly activated or registered in the SAP Gateway.
  Transport Issues: If the OData service was transported from one system to another, there might be inconsistencies in the data model.
  
  Solutions:
  
  Check Metadata: Verify the OData service metadata to ensure that the primitive type is defined. You can access the metadata by appending $metadata to the service URL.
  Define Missing Types: If the primitive type is indeed missing, you may need to define it in the data model. This can be done in the SAP Gateway Service Builder (transaction code SEGW).
  Rebuild the Service: If changes were made to the data model, regenerate the service by right-clicking on the service in the Service Builder and selecting "Generate".
  Activate the Service: Ensure that the OData service is activated in the SAP Gateway. You can do this using transaction code /IWFND/MAINT_SERVICE.
  Check for Transport Issues: If the service was transported, ensure that all dependent objects and types were also transported correctly.
  Debugging: If the issue persists, consider debugging the service to trace where the error occurs and identify the missing type.
  
  Related Information:
  
  SAP Gateway: Understand the architecture and components of SAP Gateway, as it plays a crucial role in OData services.
  OData Protocol: Familiarize yourself with the OData protocol and how it defines data models, including primitive types.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the error related to the missing primitive type in your SAP OData service.