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

/STMC/CR_MSG686 - Overview

• 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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/STMC/CR_MSG686 - Details

• 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