How To Fix TRUST156 - Access to editing of PSE mode locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 156

• Message text: Access to editing of PSE mode locked by user &1

What causes this issue?

Access to maintenance of the PSE mode is locked by user <(>&<)>1.

System Response

A lock requested by the call of an ENQUEUE function module cannot be
granted, since another user already holds the relevant lock.

How to fix this error?

Contact the user that holds the lock.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST156 - Access to editing of PSE mode locked by user &1 ?

  The SAP error message TRUST156 indicates that access to the editing of the Personal Security Environment (PSE) is locked by a specific user. This typically occurs when a user has opened the PSE for editing and has not released it, preventing other users from making changes.
  Cause:
  
  User Lock: A user has opened the PSE for editing, and the system has locked it to prevent concurrent modifications by multiple users.
  Session Timeout: If a user has left the PSE open and their session has timed out, the lock may not be released properly.
  System Configuration: Certain configurations or settings in the SAP system may lead to this locking behavior.
  
  Solution:
  
  Identify the Locking User: Check the user ID mentioned in the error message (e.g., &1). This user is currently holding the lock on the PSE.
  Contact the User: If possible, contact the user to ask them to close their session or release the lock on the PSE.
  Use Transaction Code: You can use transaction code SM12 to view and manage locks in the system. Look for the lock entry related to the PSE and the user ID mentioned in the error message.
  Delete the Lock: If the user is unavailable or cannot release the lock, you may need to delete the lock entry from SM12. Be cautious when doing this, as it may lead to data inconsistency if the user is actively working on the PSE.
  Check for Background Jobs: Sometimes, background jobs may also hold locks. Ensure that no background processes are interfering with the PSE access.
  Restart the SAP System: As a last resort, if the lock cannot be released and is causing significant issues, restarting the SAP system may clear the lock.
  
  Related Information:
  
  PSE (Personal Security Environment): This is a secure storage area for cryptographic keys and certificates used in SAP systems for secure communication.
  User Management: Ensure that users are trained on how to properly open and close the PSE to avoid locking issues.
  System Monitoring: Regularly monitor user sessions and locks to prevent similar issues in the future.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis team or SAP support for further assistance.