How To Fix SUSR_CERT136 - Explicit mapping to other/incorrect user (&1)

SAP Error Message - Details

• Message type: E = Error

• Message class: SUSR_CERT - User Certificates Administration

• Message number: 136

• Message text: Explicit mapping to other/incorrect user (&1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SUSR_CERT136 - Explicit mapping to other/incorrect user (&1) ?

  The SAP error message SUSR_CERT136 indicates that there is an issue with user mapping in the context of SAP's user management, particularly when dealing with external authentication methods such as Single Sign-On (SSO) or when using certificates for user authentication.
  Cause:
  The error message SUSR_CERT136 typically occurs when there is an attempt to map an external user (for example, a user authenticated via a certificate) to an internal SAP user, but the mapping is either incorrect or not explicitly defined. This can happen due to several reasons:
  
  Incorrect User Mapping: The external user is trying to log in, but the system cannot find a corresponding internal user.
  Configuration Issues: The configuration for user mapping in the SAP system may not be set up correctly.
  Certificate Issues: The certificate being used for authentication may not be valid or may not match the expected user in the SAP system.
  
  Solution:
  To resolve the SUSR_CERT136 error, you can take the following steps:
  
  
  Check User Mapping:
  
  Ensure that the external user is correctly mapped to an internal SAP user. This can be done in the user management settings.
  Verify that the user ID in the external system matches the user ID in SAP.
  
  
  
  Review Configuration:
  
  Check the configuration settings for user mapping in the SAP system. This may involve looking at the settings for SSO or the specific authentication method being used.
  Ensure that the mapping rules are correctly defined in the system.
  
  
  
  Validate Certificates:
  
  If using certificates for authentication, ensure that the certificates are valid and correctly configured.
  Check if the certificate authority (CA) that issued the certificate is trusted by the SAP system.
  
  
  
  User Creation:
  
  If the external user does not exist in the SAP system, you may need to create the user manually or adjust the mapping to point to an existing user.
  
  
  
  Logs and Traces:
  
  Review the system logs and traces for more detailed information about the error. This can provide insights into what might be going wrong during the authentication process.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to user authentication and mapping for additional guidance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Management: Familiarize yourself with the user management and authentication processes in SAP, especially if you are working with SSO or external authentication methods.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the SUSR_CERT136 error in your SAP system.