How To Fix SECATT_HTTP_STATUS505 - HTTP 505-HTTP Version Not Supported

SAP Error Message - Details

• Message type: E = Error

• Message class: SECATT_HTTP_STATUS - eCATT HTTP Status Messages

• Message number: 505

• Message text: HTTP 505-HTTP Version Not Supported

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 SECATT_HTTP_STATUS505 - HTTP 505-HTTP Version Not Supported ?

  The SAP error message "SECATT_HTTP_STATUS505 HTTP 505 - HTTP Version Not Supported" typically occurs when there is an issue with the HTTP version being used in a request made by the SAP system to a web service or an external application. The HTTP 505 error indicates that the server does not support the HTTP protocol version that was used in the request.
  Causes:
  
  Incompatible HTTP Version: The SAP system may be using an outdated or unsupported HTTP version (e.g., HTTP/1.0) when communicating with a server that only supports a newer version (e.g., HTTP/1.1 or HTTP/2).
  Server Configuration: The server you are trying to connect to may be configured to reject requests that do not meet certain HTTP version requirements.
  Proxy Issues: If there is a proxy server involved, it may not support the HTTP version being used by the SAP system.
  Network Issues: Network devices or firewalls may be interfering with the HTTP request and causing it to be malformed.
  
  Solutions:
  
  Check HTTP Version: Ensure that the SAP system is configured to use a compatible HTTP version. You may need to adjust settings in the SAP system or the HTTP client configuration.
  Update SAP System: If you are using an older version of SAP, consider updating to a newer version that supports the latest HTTP protocols.
  Server Configuration: If you have control over the server, check its configuration to ensure it supports the HTTP version being used by the SAP system.
  Review Proxy Settings: If a proxy server is being used, check its configuration to ensure it supports the required HTTP version.
  Network Configuration: Investigate any network devices that may be affecting the HTTP requests and ensure they are configured correctly.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to HTTP communication and the specific error message.
  HTTP Protocols: Familiarize yourself with the differences between HTTP/1.0, HTTP/1.1, and HTTP/2 to understand compatibility issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Logs and Traces: Review the application logs and HTTP traces to gather more information about the request and response, which can help in diagnosing the issue.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.