How To Fix 00140 - This system rejects all logons using SSO tickets

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 140

• Message text: This system rejects all logons using SSO tickets

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00140 - This system rejects all logons using SSO tickets ?

  The SAP error message "00140: This system rejects all logons using SSO tickets" indicates that the system is configured to reject Single Sign-On (SSO) logon attempts. This can occur for several reasons, and understanding the cause is essential for resolving the issue.
  Causes:
  
  
  SSO Configuration Issues: The SSO configuration may not be set up correctly. This includes issues with the Secure Network Communications (SNC) settings or the SSO ticket configuration.
  
  
  Trust Relationship: There may be a problem with the trust relationship between the SAP system and the identity provider (IdP) or the Kerberos realm.
  
  
  Expired or Invalid Tickets: The SSO tickets being used may be expired or invalid, leading to rejection.
  
  
  System Settings: The SAP system may be configured to reject SSO logons due to specific settings in the profile parameters.
  
  
  User Authorization: The user attempting to log in may not have the necessary authorizations to use SSO.
  
  
  Solutions:
  
  
  Check SSO Configuration:
  
  Verify the SSO configuration in the SAP system. Ensure that the SNC parameters are correctly set in the instance profile (e.g., snc/enable, snc/gssapi_lib, snc/identity/as).
  Ensure that the SSO ticket is being generated correctly by the identity provider.
  
  
  
  Review Trust Relationships:
  
  Check the trust relationship between the SAP system and the identity provider. Ensure that the necessary certificates are in place and that the configuration is correct.
  
  
  
  Validate Tickets:
  
  Use tools like klist (for Kerberos) to check if the tickets are valid and not expired. If they are expired, re-authenticate to obtain a new ticket.
  
  
  
  Profile Parameters:
  
  Review the instance profile parameters related to SSO and SNC. Ensure that the parameters are set to allow SSO logons.
  
  
  
  User Authorizations:
  
  Check the user authorizations to ensure that the user has the necessary roles and permissions to log in using SSO.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring SSO and SNC.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have faced similar issues.
  Logs and Traces: Analyze the system logs (e.g., dev_w0, dev_rfc) for any additional error messages or warnings that could provide more context on the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement the necessary solutions to enable SSO logons in your SAP system.