How To Fix /IWFND/MED005 - Type of '&1' in external model '&2' in node '&3' is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 005

• Message text: Type of '&1' in external model '&2' in node '&3' is not supported

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/MED005 - Type of '&1' in external model '&2' in node '&3' is not supported ?

  The SAP error message /IWFND/MED005 Type of '&1' in external model '&2' in node '&3' is not supported typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an unsupported data type being used in the external model for the specified node in the OData service.
  Cause:
  
  Unsupported Data Type: The error is primarily caused by the use of a data type in the OData model that is not supported by the SAP Gateway. This can happen if the data type is not recognized or is incompatible with the OData service.
  Model Definition Issues: There may be issues in the way the external model is defined, such as incorrect mappings or unsupported types in the metadata.
  Inconsistent Metadata: If the metadata of the OData service does not match the expected structure or types, it can lead to this error.
  
  Solution:
  
  Check Data Types: Review the data types used in the external model. Ensure that all data types are supported by SAP Gateway. Common supported types include Edm.String, Edm.Int32, Edm.Boolean, etc.
  Update Model Definitions: If you find unsupported types, consider updating the model definitions to use compatible types. This may involve changing the data type in the underlying data source or adjusting the OData service definition.
  Regenerate the OData Service: If changes are made to the underlying data model or types, regenerate the OData service to ensure that the changes are reflected in the service metadata.
  Check Metadata: Use the OData service's metadata endpoint (usually accessible via /$metadata) to inspect the data types and structure. Ensure that they align with what is expected.
  Debugging: If the issue persists, consider debugging the OData service to trace where the unsupported type is being referenced. This may involve checking the service implementation or the underlying data source.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on supported data types in OData services.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  Documentation: Refer to the official SAP Gateway and OData documentation for detailed information on supported data types and best practices for model definitions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.