How To Fix /IWFND/CM_LOGGING305 - No duplicate request message found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_LOGGING -

• Message number: 305

• Message text: No duplicate request message found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_LOGGING305 - No duplicate request message found ?

  The SAP error message /IWFND/CM_LOGGING305 No duplicate request message found typically occurs in the context of SAP Gateway services, particularly when dealing with OData services. This error indicates that the system is unable to find a duplicate request message that it expects to process. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Request Handling: The error usually arises when the system is trying to handle a request that it believes should be a duplicate (for example, due to idempotency in HTTP methods like POST or PUT), but it cannot find the corresponding request in its logs.
  Logging Configuration: The logging mechanism for duplicate requests may not be properly configured or may have been cleared, leading to the inability to find the expected request.
  Network Issues: Intermittent network issues or timeouts may cause the request to be sent multiple times, but the system may not have logged the first instance correctly.
  Client-Side Issues: The client application may be sending requests incorrectly or not handling responses properly, leading to confusion in the request lifecycle.
  
  Solutions:
  
  Check Request Logs: Investigate the logs for the OData service to see if the original request was logged. You can use transaction code /IWFND/LOG to view the logs.
  Review Configuration: Ensure that the logging for duplicate requests is properly configured in the SAP Gateway settings. Check the settings in transaction /IWFND/MAINT_SERVICE and ensure that the service is active and configured correctly.
  Client-Side Debugging: If you have access to the client application, check the logic that sends requests to the SAP Gateway. Ensure that it is not sending duplicate requests unnecessarily.
  Network Stability: Ensure that the network connection between the client and the SAP system is stable to avoid timeouts or retries that could lead to duplicate requests.
  Error Handling: Implement proper error handling in the client application to manage responses from the server effectively, ensuring that it does not resend requests unnecessarily.
  
  Related Information:
  
  Idempotency: Understand the concept of idempotency in RESTful services, which means that making the same request multiple times should have the same effect as making it once.
  SAP Gateway Documentation: Refer to the official SAP Gateway documentation for more details on handling OData services and error messages.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message or provide patches and updates.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.