How To Fix TRUST096 - Certificate in address book is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 096

• Message text: Certificate in address book is not unique

Self-Explanatory Message

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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 TRUST096 - Certificate in address book is not unique ?

  The SAP error message TRUST096: Certificate in address book is not unique typically occurs when there are multiple entries for the same certificate in the SAP address book. This can happen if the same certificate has been imported multiple times or if there are duplicate entries for the same certificate.
  Cause:
  
  Duplicate Certificates: The same certificate has been imported more than once into the SAP system.
  Multiple Entries: There are multiple entries in the address book for the same certificate, which can happen due to incorrect import processes or manual entries.
  Incorrect Configuration: The system may not be configured correctly to handle certificates, leading to duplicates.
  
  Solution:
  To resolve the TRUST096 error, you can follow these steps:
  
  
  Check the Address Book:
  
  Go to transaction code STRUST (Trust Manager).
  Navigate to the SSL Client (Standard) or SSL Server (Standard) tab, depending on where the certificate is located.
  Review the list of certificates in the address book.
  
  
  
  Identify Duplicates:
  
  Look for duplicate entries of the same certificate. You can identify duplicates by checking the certificate details such as the subject, issuer, and serial number.
  
  
  
  Delete Duplicates:
  
  If you find duplicate entries, you can delete the unnecessary ones. Select the duplicate certificate and use the delete option to remove it from the address book.
  
  
  
  Re-import the Certificate:
  
  If necessary, re-import the certificate to ensure that you have a single, correct entry in the address book.
  
  
  
  Check for Configuration Issues:
  
  Ensure that your system is configured correctly for handling certificates. This includes checking the trust relationships and ensuring that the correct certificate authorities are in place.
  
  
  
  Test the Configuration:
  
  After making changes, test the configuration to ensure that the error no longer occurs. You can do this by performing the action that previously triggered the error.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  STRUST: Trust Manager for managing certificates.
  STRUSTSSO2: For Single Sign-On configurations.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on managing certificates and trust relationships.
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  Security Best Practices: Regularly audit your certificate store to prevent duplicates and ensure that only valid certificates are present.
  
  
  By following these steps, you should be able to resolve the TRUST096 error and maintain a clean and functional certificate store in your SAP system.