How To Fix TRUST155 - Number of files: Protected: &1, unprotected: &2, errors: &3

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 155

• Message text: Number of files: Protected: &1, unprotected: &2, errors: &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST155 - Number of files: Protected: &1, unprotected: &2, errors: &3 ?

  The SAP error message TRUST155 indicates an issue related to the digital signature verification of files in the SAP system. This message typically arises in the context of the SAP Trust Manager, which is responsible for managing digital certificates and ensuring secure communication.
  Cause:
  The error message TRUST155 is triggered when there is a discrepancy in the number of files that are protected by digital signatures versus those that are unprotected or have errors. The message breaks down as follows:
  
  Protected: The number of files that have valid digital signatures.
  Unprotected: The number of files that do not have valid digital signatures.
  Errors: The number of files that encountered issues during the signature verification process.
  
  This situation can occur due to several reasons:
  
  Missing Digital Signatures: Some files may not have been signed, leading to them being classified as unprotected.
  Corrupted Signatures: Files may have valid signatures that are corrupted or tampered with, resulting in errors during verification.
  Expired Certificates: The digital certificates used for signing may have expired, causing the verification process to fail.
  Configuration Issues: There may be misconfigurations in the Trust Manager settings or the certificate authorities.
  
  Solution:
  To resolve the TRUST155 error, you can follow these steps:
  
  
  Check Digital Signatures:
  
  Verify that all necessary files are properly signed. You can use the SAP Trust Manager (transaction code STRUST) to check the status of the digital signatures.
  
  
  
  Re-sign Files:
  
  If you find files that are unprotected, consider re-signing them with valid digital certificates.
  
  
  
  Update Certificates:
  
  Ensure that all digital certificates used for signing are valid and not expired. If they are expired, obtain new certificates and update them in the Trust Manager.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the Trust Manager to ensure that they are correctly set up for your environment.
  
  
  
  Log Analysis:
  
  Review the logs for any specific errors related to the files in question. This can provide more insight into what might be causing the issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to digital signatures and the Trust Manager for additional guidance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  STRUST: Trust Manager for managing certificates and digital signatures.
  SNOTE: For applying SAP Notes that may address specific issues related to digital signatures.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may provide fixes or additional information regarding the TRUST155 error.
  
  
  
  SAP Community:
  
  Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  
  
  By following these steps, you should be able to identify the root cause of the TRUST155 error and implement the necessary solutions to resolve it.