How To Fix SUSR_CERT140 - Rule-based certificate mapping activated

SAP Error Message - Details

• Message type: E = Error

• Message class: SUSR_CERT - User Certificates Administration

• Message number: 140

• Message text: Rule-based certificate mapping activated

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SUSR_CERT140 - Rule-based certificate mapping activated ?

  The SAP error message SUSR_CERT140 indicates that rule-based certificate mapping is activated in the system, which can lead to issues when trying to log in using a certificate. This typically occurs in environments where users are authenticated via X.509 certificates, and the system is configured to use rule-based mapping for user identification.
  Cause:
  The error arises when the system is unable to map the incoming certificate to a corresponding user in the SAP system due to the rules defined for certificate mapping. This can happen for several reasons:
  
  Missing or Incorrect Mapping Rules: The rules defined for mapping certificates to users may not be set up correctly or may not cover the incoming certificate.
  Certificate Issues: The certificate being presented may not match any of the expected patterns defined in the mapping rules.
  User Not Found: There may not be a corresponding user in the SAP system for the certificate being used.
  
  Solution:
  To resolve the SUSR_CERT140 error, you can take the following steps:
  
  
  Check Mapping Rules:
  
  Go to transaction code SICF and check the configuration for the service that handles the certificate authentication.
  Review the mapping rules defined in transaction SUSR (User Management) under the "Certificate Mapping" section.
  Ensure that the rules are correctly defined to match the incoming certificate's subject or issuer.
  
  
  
  Verify Certificates:
  
  Ensure that the certificate being used is valid and correctly installed in the user's browser or client.
  Check the certificate chain to ensure that all intermediate certificates are present and trusted.
  
  
  
  User Existence:
  
  Verify that the user corresponding to the certificate exists in the SAP system.
  If necessary, create a user that matches the expected mapping criteria.
  
  
  
  Testing:
  
  After making changes, test the login process again to see if the issue is resolved.
  You can also use transaction SICF to test the service and see if the mapping works as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation for detailed guidance on configuring rule-based certificate mapping and troubleshooting related issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error.
  Security Configuration: Review the overall security configuration of your SAP system, especially related to SSL and certificate handling.
  Logs: Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify and resolve the cause of the SUSR_CERT140 error in your SAP system.