How To Fix /IWPGW/TGW_TCM_MSG104 - Receiving HTTP response from destination &1 failed (RC:&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWPGW/TGW_TCM_MSG -

• Message number: 104

• Message text: Receiving HTTP response from destination &1 failed (RC:&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 /IWPGW/TGW_TCM_MSG104 - Receiving HTTP response from destination &1 failed (RC:&2) ?

  The SAP error message /IWPGW/TGW_TCM_MSG104 indicates that there was a failure in receiving an HTTP response from a specified destination. This error typically occurs in the context of SAP Gateway or when making HTTP calls to external services. The message includes two parameters: &1, which represents the destination name, and &2, which indicates the return code (RC) of the HTTP request.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target destination.
  Destination Configuration: The HTTP destination may not be configured correctly in the SAP system (e.g., incorrect URL, authentication issues).
  Service Unavailability: The external service you are trying to reach may be down or not responding.
  Firewall Restrictions: Firewalls or security settings may be blocking the HTTP request.
  Timeouts: The request may be timing out due to slow response times from the external service.
  SSL Issues: If the destination uses HTTPS, there may be issues with SSL certificates or trust relationships.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the destination. You can use tools like ping or telnet to test connectivity.
  Verify Destination Configuration:
  
  Go to transaction SM59 in SAP.
  Check the configuration of the HTTP destination (RFC destination).
  Ensure that the URL is correct and that any required authentication (Basic Auth, OAuth, etc.) is properly set up.
  
  
  Test the Destination: Use the "Connection Test" feature in SM59 to see if the destination is reachable and responding correctly.
  Check External Service Status: Verify that the external service is up and running. You can try accessing the service directly via a web browser or a tool like Postman.
  Review Firewall Settings: Ensure that there are no firewall rules blocking the HTTP requests from the SAP system to the external service.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the destination configuration.
  SSL Certificate Validation: If using HTTPS, ensure that the SSL certificates are valid and trusted by the SAP system. You may need to import the certificate into the SAP trust store.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs and Traces: Review the application logs (transaction SLG1) and HTTP traces (transaction SICF or ST01) for more detailed error messages that can provide further insights into the issue.
  SAP Community: Consider searching or posting in the SAP Community forums for additional help from other SAP users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the error message /IWPGW/TGW_TCM_MSG104.