How To Fix 00776 - Multiple suitable SAP users found for X.509 client certificate

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 776

• Message text: Multiple suitable SAP users found for X.509 client certificate

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00776 - Multiple suitable SAP users found for X.509 client certificate ?

  The SAP error message "00776 Multiple suitable SAP users found for X.509 client certificate" typically occurs in scenarios where an X.509 client certificate is used for authentication, and the system finds multiple SAP user accounts that match the certificate's attributes. This can lead to ambiguity in determining which user should be authenticated, resulting in the error.
  Cause:
  
  Multiple User Accounts: There are multiple SAP user accounts that have been configured to use the same X.509 certificate or have similar attributes (like the same distinguished name).
  Certificate Configuration: The X.509 certificate may not be unique enough to identify a single user in the SAP system.
  User Mapping Issues: The mapping between the certificate and the SAP user accounts may not be properly configured, leading to multiple matches.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check User Accounts:
  
  Use transaction code SU01 to review the user accounts in the SAP system.
  Identify the users that are associated with the X.509 certificate and check their attributes.
  
  
  
  Modify User Attributes:
  
  Ensure that each user account has a unique mapping to the X.509 certificate. This may involve modifying the distinguished name (DN) or other attributes in the certificate or user profiles.
  
  
  
  Adjust Certificate Configuration:
  
  If possible, generate a new X.509 certificate that has unique attributes for each user. This can help in ensuring that the system can uniquely identify each user.
  
  
  
  Review SSL Configuration:
  
  Check the SSL configuration in the SAP system to ensure that it is set up correctly for client authentication.
  Use transaction STRUST to manage SSL certificates and ensure that the correct certificates are imported and configured.
  
  
  
  User Mapping in the System:
  
  Ensure that the mapping of the X.509 certificate to the SAP user is correctly set up. This can involve checking the settings in the STRUST transaction and ensuring that the correct user is assigned to the certificate.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to X.509 certificate authentication for any specific configurations or recommendations.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SU01: User Maintenance
  STRUST: Trust Manager for SSL certificates
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Security Settings: Review the security settings in your SAP system to ensure that they align with best practices for certificate-based authentication.
  
  By following these steps, you should be able to resolve the error and ensure that the X.509 client certificate is correctly mapped to a single SAP user account.