How To Fix TRUST054 - Distinguished Name already assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 054

• Message text: Distinguished Name already assigned

What causes this issue?

This Distinguished Name (DN) was already assigned elsewhere.

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?

Choose a different DN. In the case of the "SNC (SAPCryptolib)" PSE, you
must reste the <SE>profile parameter </><ZH>snc/identity/as</>.

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 TRUST054 - Distinguished Name already assigned ?

  The SAP error message TRUST054: Distinguished Name already assigned typically occurs in the context of managing trust relationships and digital certificates within the SAP system, particularly when dealing with Secure Network Communications (SNC) or Single Sign-On (SSO) configurations.
  Cause:
  This error indicates that the Distinguished Name (DN) you are trying to assign to a user or a system is already in use by another entity in the SAP system. Each DN must be unique within the context of the SAP system's security configuration, and attempting to assign a duplicate DN will trigger this error.
  Solution:
  To resolve the TRUST054 error, you can follow these steps:
  
  
  Check Existing DNs: 
  
  Use transaction code STRUST to access the Trust Manager.
  Review the existing certificates and their associated DNs to identify where the conflict is occurring.
  
  
  
  Identify the Duplicate:
  
  Look for the DN that you are trying to assign and see which user or system is currently using it.
  You can also use transaction SU01 to check user profiles and see if the DN is assigned to a user.
  
  
  
  Modify or Remove the Existing Assignment:
  
  If the DN is assigned to a user or system that no longer needs it, you can remove or modify that assignment.
  If the DN is still needed, consider using a different DN for the new assignment.
  
  
  
  Reassign the DN:
  
  After resolving the conflict, attempt to assign the DN again to the intended user or system.
  
  
  
  Check for Configuration Issues:
  
  Ensure that your SNC or SSO configurations are set up correctly and that there are no other underlying issues that could be causing the error.
  
  
  
  Related Information:
  
  Documentation: Refer to SAP Help documentation for detailed guidance on managing trust relationships and certificates.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates related to this error.
  Security Best Practices: Ensure that you follow best practices for managing DNs and certificates to avoid conflicts in the future.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, as they can provide more tailored help based on your specific system configuration.