How To Fix /IWNGW/CM_BEP_RT029 - Since method '&1' not implemented, perfoming action(s) using method '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_BEP_RT -

• Message number: 029

• Message text: Since method '&1' not implemented, perfoming action(s) using method '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_BEP_RT029 - Since method '&1' not implemented, perfoming action(s) using method '&2' ?

  The SAP error message /IWNGW/CM_BEP_RT029 indicates that a specific method (denoted as &1) is not implemented in the system, and as a fallback, the system is attempting to perform actions using an alternative method (denoted as &2). This error typically arises in the context of SAP Gateway services, particularly when dealing with OData services.
  Cause:
  
  Missing Implementation: The primary cause of this error is that the method specified (e.g., GET, POST, PUT, DELETE) is not implemented in the corresponding service or data provider class.
  Service Configuration: The OData service may not be properly configured to handle the requested operation.
  Versioning Issues: There may be discrepancies between the service version and the client request, leading to the unavailability of the expected method.
  Transport Issues: If the service was recently transported from one system to another, the implementation might not have been included.
  
  Solution:
  
  
  Implement the Missing Method:
  
  Check the service implementation in the SAP Gateway Service Builder (transaction code SEGW).
  Ensure that the method indicated by &1 is implemented in the corresponding Data Provider Class (DPC).
  If it is not implemented, you will need to create the logic for that method.
  
  
  
  Check Service Registration:
  
  Ensure that the OData service is properly registered and activated in the SAP Gateway (transaction code /IWFND/MAINT_SERVICE).
  Verify that the service is correctly mapped to the appropriate backend logic.
  
  
  
  Review Service Metadata:
  
  Use the service's metadata URL (e.g., /sap/opu/odata/sap/<service_name>/$metadata) to check if the method is listed in the service definition.
  If the method is missing, it may need to be added to the service definition.
  
  
  
  Debugging:
  
  Use transaction SE80 or SEGW to debug the service implementation and check for any runtime errors or exceptions that may be causing the method not to be executed.
  
  
  
  Check for Transport Issues:
  
  If the service was recently transported, ensure that all necessary objects (including the DPC and MPC classes) were included in the transport request.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific OData service you are working with for any known issues or additional configuration steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SEGW: Service Builder for OData services.
  /IWFND/MAINT_SERVICE: Service maintenance for OData services.
  SE80: Object Navigator for debugging and development.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific OData service or the error message.
  
  
  Community Forums: Consider searching or posting in SAP Community forums for additional insights or similar experiences from other users.
  
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.