How To Fix TRUST105 - Certificate included in address book

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 105

• Message text: Certificate included in address book

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST105 - Certificate included in address book ?

  The SAP error message TRUST105 indicates that a certificate is included in the address book but is not valid for the intended use. This typically occurs in the context of Secure Network Communications (SNC) or when dealing with digital signatures and encryption in SAP systems.
  Cause:
  The error can arise due to several reasons:
  
  Expired Certificate: The certificate in the address book may have expired.
  Incorrect Certificate Usage: The certificate may not be suitable for the intended purpose (e.g., it may not be a valid client certificate).
  Missing Intermediate Certificates: The certificate chain may be incomplete, leading to trust issues.
  Misconfiguration: The address book entry may not be correctly configured or may point to an incorrect certificate.
  
  Solution:
  To resolve the TRUST105 error, you can follow these steps:
  
  
  Check Certificate Validity:
  
  Verify the expiration date of the certificate. If it is expired, you will need to renew or replace it.
  
  
  
  Review Certificate Usage:
  
  Ensure that the certificate is intended for the specific use case (e.g., client authentication, server authentication, etc.). You can check the certificate's Extended Key Usage (EKU) attributes.
  
  
  
  Update Address Book:
  
  If the certificate is valid but not correctly configured, update the address book entry in the SAP system. You can do this using transaction code STRUST.
  Navigate to the appropriate section (e.g., "SSL Client (Standard)" or "SSL Server (Standard)") and ensure the correct certificate is selected.
  
  
  
  Import Missing Certificates:
  
  If there are intermediate certificates that are missing, import them into the address book to complete the trust chain.
  
  
  
  Test the Configuration:
  
  After making changes, test the configuration to ensure that the error is resolved. You can use transaction SICF to test the service or perform a connection test.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of your SAP system for any additional troubleshooting steps or known issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  STRUST: Manage the SSL certificates and trust relationships.
  SICF: Test and manage Internet Communication Framework services.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to the TRUST105 error.
  
  
  Security Best Practices: Regularly review and update your certificates and ensure that your SAP system is configured according to best security practices.
  
  
  By following these steps, you should be able to identify the root cause of the TRUST105 error and implement the necessary solutions to resolve it.