How To Fix TRUST078 - Selected entry is the PSE for Single Sign-On with logon ticket

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 078

• Message text: Selected entry is the PSE for Single Sign-On with logon ticket

What causes this issue?

The PSE for Single Sign-On with logon ticket is determined using the
following rule. Use the first of the following PSEs that is defined in
the system.
Logon ticket
Standard application
System PSE

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST078 - Selected entry is the PSE for Single Sign-On with logon ticket ?

  The SAP error message TRUST078 indicates that the selected entry is the PSE (Personal Security Environment) for Single Sign-On (SSO) with logon tickets. This error typically arises in the context of configuring SSO in an SAP environment, particularly when dealing with trust relationships between systems.
  Cause:
  The error usually occurs due to one of the following reasons:
  
  Incorrect PSE Configuration: The PSE for the system is not correctly configured or is missing.
  Trust Relationship Issues: There may be issues with the trust relationship between the SAP systems involved in the SSO setup.
  Certificate Issues: The certificates used for SSO may be expired, not properly imported, or not matching.
  Missing or Incorrect Logon Ticket Configuration: The logon ticket settings may not be correctly set up in the SAP system.
  
  Solution:
  To resolve the TRUST078 error, you can follow these steps:
  
  
  Check PSE Configuration:
  
  Ensure that the PSE is correctly configured for the system. You can do this by using transaction STRUST.
  Verify that the correct PSE is selected for the SSO configuration.
  
  
  
  Verify Trust Relationships:
  
  Check the trust relationships between the SAP systems. Ensure that the systems are properly configured to trust each other.
  Use transaction STRUST to manage and verify the trust relationships.
  
  
  
  Check Certificates:
  
  Ensure that the certificates used for SSO are valid and not expired. You can check this in the PSE management in transaction STRUST.
  If necessary, regenerate or import the required certificates.
  
  
  
  Logon Ticket Configuration:
  
  Review the logon ticket settings in the SAP system. Ensure that the parameters related to SSO and logon tickets are correctly set.
  Check the profile parameters related to SSO, such as login/accept_sso2_ticket, login/create_sso2_ticket, etc.
  
  
  
  Testing:
  
  After making the necessary changes, test the SSO configuration to ensure that it is working correctly.
  Use the appropriate tools or transactions to simulate the SSO process and verify that logon tickets are being generated and accepted.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP documentation on configuring SSO and managing PSEs for detailed steps and best practices.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to TRUST078 or SSO configuration.
  Community Forums: Engage with SAP community forums or support channels for additional insights and troubleshooting tips from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the TRUST078 error and successfully configure SSO in your SAP environment.