How To Fix /STMC/CR_MSG686 - Error while testing HTTP connection &1; rc=&2

SAP Error Message - Details

• Message type: E = Error

• Message class: /STMC/CR_MSG -

• Message number: 686

• Message text: Error while testing HTTP connection &1; 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.

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /STMC/CR_MSG686 - Error while testing HTTP connection &1; rc=&2 ?

  The SAP error message /STMC/CR_MSG686 typically indicates an issue with testing an HTTP connection in the SAP system. The message format suggests that there is a problem with the connection to a specific URL or service, and it provides a return code (rc) that can help diagnose the issue.
  Cause:
  
  Network Issues: The SAP system may not be able to reach the specified URL due to network problems, such as firewall restrictions, DNS resolution issues, or incorrect proxy settings.
  Incorrect URL: The URL being tested may be incorrect or not reachable. This could be due to a typo or the service being down.
  Authentication Issues: If the HTTP connection requires authentication, and the credentials are incorrect or not provided, the connection will fail.
  Service Unavailability: The target service may be down or not running, leading to a failure in establishing the connection.
  SSL/TLS Issues: If the connection is over HTTPS, there may be issues related to SSL certificates, such as expired certificates or untrusted certificate authorities.
  
  Solution:
  
  Check Network Connectivity: Ensure that the SAP system can reach the target URL. You can use tools like ping or telnet to test connectivity.
  Verify the URL: Double-check the URL for any typos or errors. Make sure it is the correct endpoint you are trying to reach.
  Review Authentication Settings: If the service requires authentication, ensure that the correct credentials are configured in the SAP system.
  Check Service Status: Verify that the target service is up and running. You can do this by accessing the URL directly from a web browser or using tools like curl.
  Inspect SSL/TLS Configuration: If using HTTPS, check the SSL certificate configuration. Ensure that the certificate is valid and trusted by the SAP system.
  Review SAP Logs: Check the SAP application logs (transaction SLG1) for more detailed error messages that can provide additional context about the failure.
  
  Related Information:
  
  
  Return Codes: The return code (rc) provided in the error message can give insights into the specific nature of the failure. Common return codes include:
  
  0: Success
  1: General error
  2: Connection refused
  3: Timeout
  4: Authentication failed
  (Refer to SAP documentation for a complete list of return codes and their meanings.)
  
  
  
  Transaction Codes: You may want to use transaction codes like SM59 (for RFC destinations) to check the configuration of the HTTP connection and ensure that all settings are correct.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  By following these steps, you should be able to diagnose and resolve the issue related to the /STMC/CR_MSG686 error message in your SAP system.