How To Fix TRUST099 - Invalid Distinguished Name

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 099

• Message text: Invalid Distinguished Name

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.

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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 TRUST099 - Invalid Distinguished Name ?

  The SAP error message TRUST099: Invalid Distinguished Name typically occurs in the context of SAP systems when dealing with digital certificates, particularly in scenarios involving Secure Network Communications (SNC) or when configuring trust relationships between systems.
  Cause:
  The error message indicates that there is an issue with the Distinguished Name (DN) format in the certificate being used. This can happen due to several reasons:
  
  Incorrect Format: The DN may not conform to the expected format, which usually follows the X.500 standard.
  Missing Attributes: Required attributes in the DN (like CN, OU, O, etc.) may be missing.
  Invalid Characters: The DN may contain invalid characters or syntax errors.
  Certificate Issues: The certificate itself may be corrupted or improperly generated.
  Configuration Errors: There may be misconfigurations in the SNC or trust settings in the SAP system.
  
  Solution:
  To resolve the TRUST099 error, you can follow these steps:
  
  
  Check the Distinguished Name:
  
  Verify the DN format in the certificate. It should look something like this:
  CN=CommonName, OU=OrganizationalUnit, O=Organization, L=Locality, ST=State, C=Country
  
  Ensure that all required components are present and correctly formatted.
  
  
  
  Validate the Certificate:
  
  Use tools like OpenSSL to check the validity of the certificate. You can run commands to inspect the certificate and ensure it is correctly formatted.
  Example command:
  openssl x509 -in your_certificate.crt -text -noout
  
  
  
  
  Check for Invalid Characters:
  
  Ensure that the DN does not contain any invalid characters or spaces that could cause parsing issues.
  
  
  
  Review SNC Configuration:
  
  If you are using SNC, check the SNC parameters in the SAP system (e.g., snc/identity/as and snc/identity/client).
  Ensure that the SNC library is correctly configured and that the paths to the certificates are correct.
  
  
  
  Regenerate Certificates:
  
  If the certificate is found to be invalid or corrupted, consider regenerating it using a proper Certificate Authority (CA) or self-signing it with the correct parameters.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Testing:
  
  After making changes, test the configuration to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  SNC (Secure Network Communications): A security layer that provides encryption and authentication for SAP communications.
  Distinguished Name (DN): A string that uniquely identifies an entity in a directory service, often used in the context of X.509 certificates.
  SAP Security: Understanding the security settings and configurations in SAP is crucial for troubleshooting issues related to certificates and trust relationships.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.