How To Fix /IWFND/MED_CHECK027 - No operation for target '&1' of reference '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED_CHECK -

• Message number: 027

• Message text: No operation for target '&1' of reference '&2'

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/MED_CHECK027 - No operation for target '&1' of reference '&2' ?

  The SAP error message /IWFND/MED_CHECK027 No operation for target '&1' of reference '&2' typically occurs in the context of SAP Gateway services, particularly when dealing with OData services. This error indicates that the system cannot find a valid operation (such as GET, POST, PUT, DELETE) for the specified target entity or reference.
  Cause:
  
  Missing Operation: The OData service does not have a defined operation for the specified target entity. This could be due to a missing implementation in the service or an incorrectly defined service metadata.
  Incorrect URL: The URL being accessed may not correspond to any defined operation in the OData service.
  Service Registration Issues: The OData service might not be properly registered or activated in the SAP Gateway.
  Authorization Issues: The user may not have the necessary authorizations to access the specified operation.
  Service Versioning: If there are multiple versions of the service, the requested operation may not exist in the version being accessed.
  
  Solution:
  
  
  Check Service Implementation:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW) and check if the operation for the target entity is implemented.
  Ensure that the service has the necessary CRUD operations defined.
  
  
  
  Verify Service Registration:
  
  Use transaction code /IWFND/MAINT_SERVICE to check if the service is registered and activated.
  If not, register and activate the service.
  
  
  
  Check the URL:
  
  Ensure that the URL being used to access the OData service is correct and corresponds to the defined operations in the service metadata.
  
  
  
  Review Authorizations:
  
  Check if the user has the necessary authorizations to access the OData service and its operations.
  
  
  
  Test the Service:
  
  Use the SAP Gateway Client (transaction code /IWFND/GW_CLIENT) to test the OData service and see if the operations are working as expected.
  
  
  
  Check Service Metadata:
  
  Access the service metadata (usually at the URL http://<host>:<port>/sap/opu/odata/sap/<service_name>/$metadata) to verify that the operations are correctly defined.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the service implementation to identify any logical errors that may be causing the operation to not be recognized.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  OData Documentation: Familiarize yourself with OData service development and troubleshooting in SAP to better understand how to manage and resolve issues related to OData services.
  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 cause of the /IWFND/MED_CHECK027 error in your SAP environment.