00145 - This SSO ticket has already been used (security protection)

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 145

• Message text: This SSO ticket has already been used (security protection)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00145 - This SSO ticket has already been used (security protection) ?

  The SAP error message "00145: This SSO ticket has already been used (security protection)" typically occurs in the context of Single Sign-On (SSO) authentication. This error indicates that the SSO ticket being used for authentication has already been consumed, meaning it cannot be reused for another session. This is a security feature designed to prevent replay attacks.
  Causes:
  
  Single Use Ticket: SSO tickets are designed to be single-use for security reasons. If a ticket is used once, it cannot be reused.
  Session Timeout: If the session associated with the ticket has expired, the ticket may be considered invalid.
  Multiple Requests: If multiple requests are made using the same ticket, the first request will consume the ticket, leading to this error for subsequent requests.
  Configuration Issues: Misconfigurations in the SSO setup or the underlying authentication mechanism can lead to this error.
  Network Issues: Intermittent network issues may cause a ticket to be sent multiple times, leading to it being marked as used.
  
  Solutions:
  
  Obtain a New Ticket: The simplest solution is to obtain a new SSO ticket. This usually involves re-authenticating the user.
  Check Session Management: Ensure that the session management is correctly configured to handle SSO tickets. This includes checking for session timeouts and ensuring that sessions are properly terminated.
  Review SSO Configuration: Verify the configuration of the SSO system, including the ticket generation and validation processes. Ensure that the SSO provider and SAP system are correctly integrated.
  Monitor for Multiple Requests: Implement logging to monitor for multiple requests using the same ticket. This can help identify if the application is inadvertently sending multiple requests.
  Network Stability: Ensure that the network connection is stable and that there are no issues causing repeated requests.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to SSO and this specific error message.
  Documentation: Review the documentation for your SSO solution (e.g., SAP Cloud Identity, Kerberos, etc.) for best practices and troubleshooting steps.
  Support: If the issue persists, consider reaching out to SAP support or your SSO provider for further assistance.
  
  By following these steps, you should be able to resolve the "00145: This SSO ticket has already been used" error and ensure a smoother authentication process.