How To Fix STW_OL302 - HTTP call failed with status &1 message &2

SAP Error Message - Details

• Message type: E = Error

• Message class: STW_OL - Messages of the Object Layer (Stream Work Library)

• Message number: 302

• Message text: HTTP call failed with status &1 message &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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message STW_OL302 - HTTP call failed with status &1 message &2 ?

  The SAP error message STW_OL302 indicates that an HTTP call has failed, and it provides a status code and a message that can help diagnose the issue. This error typically occurs in the context of SAP systems that are trying to communicate with external services or APIs over HTTP.
  Cause:
  The error can be caused by several factors, including but not limited to:
  
  Network Issues: There may be connectivity problems between the SAP system and the external service.
  Service Unavailability: The external service you are trying to reach may be down or not responding.
  Incorrect URL: The URL being called may be incorrect or malformed.
  Authentication Issues: If the external service requires authentication, there may be issues with the credentials being used.
  Firewall or Proxy Settings: Firewalls or proxy settings may be blocking the HTTP request.
  Timeouts: The request may be timing out due to slow response times from the external service.
  
  Solution:
  To resolve the STW_OL302 error, you can take the following steps:
  
  Check Network Connectivity: Ensure that the SAP system can reach the external service. You can use tools like ping or telnet to test connectivity.
  Verify the URL: Double-check the URL being used in the HTTP call to ensure it is correct.
  Check Service Status: Verify that the external service is up and running. You can do this by trying to access the service directly through a web browser or a tool like Postman.
  Review Authentication: If the service requires authentication, ensure that the credentials are correct and that they are being sent properly in the request.
  Inspect Firewall/Proxy Settings: Check if there are any firewall or proxy settings that might be blocking the request. You may need to work with your network team to resolve this.
  Increase Timeout Settings: If the service is slow to respond, consider increasing the timeout settings in your HTTP call configuration.
  Check SAP Logs: Review the SAP application logs (transaction SLG1) for more detailed error messages that may provide additional context.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  HTTP Client Configuration: Review the configuration of the HTTP client in your SAP system (transaction SICF) to ensure it is set up correctly.
  Monitoring Tools: Use monitoring tools to track the performance and availability of the external service.
  
  By following these steps, you should be able to diagnose and resolve the STW_OL302 error in your SAP system. If the issue persists, consider reaching out to SAP support for further assistance.