How To Fix /IWFND/MED028 - Entity type '&1' is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 028

• Message text: Entity type '&1' is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/MED028 - Entity type '&1' is not supported ?

  The SAP error message /IWFND/MED028 Entity type '&1' is not supported typically occurs in the context of SAP Gateway and OData services. This error indicates that the specified entity type (represented by &1) is not recognized or supported by the system. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Entity Type Not Defined: The entity type may not be defined in the OData service or the corresponding data model.
  Service Activation: The OData service that includes the entity type may not be activated in the SAP Gateway.
  Authorization Issues: The user may not have the necessary authorizations to access the entity type.
  Incorrect URL: The URL used to access the OData service may be incorrect, leading to a request for a non-existent entity type.
  Model Changes: Changes in the underlying data model (like changes in the CDS view or data source) that are not reflected in the OData service.
  
  Solutions:
  
  
  Check Entity Type Definition:
  
  Ensure that the entity type is correctly defined in the OData service. You can do this by checking the service metadata (usually accessible via the service URL with $metadata appended).
  
  
  
  Activate the OData Service:
  
  Go to transaction code /IWFND/MAINT_SERVICE and check if the service is activated. If not, activate it.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the OData service and the specific entity type.
  
  
  
  Verify the URL:
  
  Double-check the URL being used to access the OData service. Ensure that it matches the expected format and includes the correct entity type.
  
  
  
  Regenerate the Service:
  
  If there have been changes to the underlying data model, you may need to regenerate the OData service. This can be done in the service builder (transaction code /IWFND/SEGW).
  
  
  
  Check for Errors in the Service Implementation:
  
  If you have implemented custom logic for the OData service, ensure that there are no errors in the implementation that could lead to this issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: Manage OData services.
  /IWFND/SEGW: Service Builder for OData services.
  /IWFND/GW_CLIENT: Test OData services.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to your version of SAP or the OData service you are using.
  
  
  Documentation: Refer to the official SAP documentation for OData services and SAP Gateway for more detailed information on service creation, activation, and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWFND/MED028 error message.