How To Fix SAML2077 - Authenication failed: Multiple entries in USREXTID

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 077

• Message text: Authenication failed: Multiple entries in USREXTID

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2077 - Authenication failed: Multiple entries in USREXTID ?

  The SAP error message SAML2077 indicates that there is an authentication failure due to multiple entries in the USREXTID (User External ID) for a user in the context of SAML (Security Assertion Markup Language) authentication. This typically occurs when the system encounters more than one external ID for a user during the authentication process, which leads to ambiguity and prevents successful authentication.
  Cause:
  
  Multiple External IDs: The primary cause of this error is that the user has multiple entries in the USREXTID table for the same user ID. This can happen if the user has been configured with multiple identity providers or if there are duplicate entries in the user management system.
  Configuration Issues: Misconfiguration in the SAML setup or identity provider settings can also lead to this issue.
  User Management Errors: Errors in user management processes, such as incorrect imports or migrations, can create duplicate external IDs.
  
  Solution:
  To resolve the SAML2077 error, you can take the following steps:
  
  
  Check User External IDs:
  
  Use transaction code SU01 to check the user profile for the affected user.
  Look for the USREXTID entries associated with the user. You can also check the USREXTID table directly using transaction code SE16N or SE11.
  
  
  
  Remove Duplicate Entries:
  
  If you find multiple entries for the same user, you will need to remove the duplicates. Ensure that only one valid external ID remains for the user.
  You can do this by using the appropriate transaction or program to delete the unnecessary entries.
  
  
  
  Review SAML Configuration:
  
  Ensure that the SAML configuration is set up correctly. Check the identity provider settings and ensure that they are not creating multiple external IDs for the same user.
  Verify that the SAML assertion is correctly configured to provide a unique external ID.
  
  
  
  User Management Practices:
  
  Implement best practices for user management to prevent the creation of duplicate external IDs in the future. This may include regular audits of user accounts and external IDs.
  
  
  
  Testing:
  
  After making the necessary changes, test the authentication process again to ensure that the issue is resolved.
  
  
  
  Related Information:
  
  SAML Authentication: Understanding how SAML works and how it integrates with SAP can help in troubleshooting similar issues.
  User Management in SAP: Familiarity with user management transactions and tables in SAP can aid in resolving user-related issues.
  SAP Notes: Check SAP Notes for any specific patches or updates related to SAML authentication and user management that may address this issue.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, as they may have additional insights or solutions based on the specific configuration of your SAP environment.