How To Fix SNC015 - No SAP user found in client &1 for &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SNC - Secure Network Communication, SNC

• Message number: 015

• Message text: No SAP user found in client &1 for &2

What causes this issue?

The system tried to execute a logon using the external identification
&V2& (an X.509 certificate, for example).
No entry could be found for the external identification in the specified
client &V1& and therefore no users from the SAP system could be
assigned.

System Response

The logon is rejected.

How to fix this error?

If logon to the SAP system using the external ID is to be permitted, an
entry with the type DN must be added to the table USREXTID.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SNC015 - No SAP user found in client &1 for &2 ?

  The SAP error message SNC015: No SAP user found in client &1 for &2 typically indicates that the system is unable to find a corresponding SAP user in the specified client for the given user ID. This error often arises in the context of Secure Network Communications (SNC) when trying to authenticate a user.
  Causes:
  
  User Not Created: The specified user does not exist in the SAP client.
  Incorrect Client: The user might exist in a different client than the one specified in the error message.
  User Lock: The user account may be locked or disabled.
  SNC Configuration Issues: There may be issues with the SNC configuration or the way the user is being authenticated.
  Authorization Issues: The user may not have the necessary authorizations to log in.
  Incorrect User ID: The user ID being used may be incorrect or misspelled.
  
  Solutions:
  
  
  Check User Existence:
  
  Use transaction code SU01 to check if the user exists in the specified client. If not, create the user or ensure you are using the correct client.
  
  
  
  Verify Client:
  
  Ensure that you are logging into the correct client. You can check the client number in the SAP logon screen.
  
  
  
  Unlock User:
  
  If the user is locked, unlock the user account using transaction code SU01.
  
  
  
  Review SNC Configuration:
  
  Check the SNC settings in the SAP system. Ensure that the SNC parameters are correctly configured in the instance profile and that the SNC library is properly installed.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to log in. You can check this using transaction code SU53 after a failed login attempt.
  
  
  
  Correct User ID:
  
  Double-check the user ID being used for login. Ensure there are no typos or incorrect characters.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SU01: User Maintenance
  SU53: Display Authorization Check
  SNC1: SNC Configuration
  
  
  
  SNC Configuration: Ensure that the SNC parameters in the instance profile are set correctly, including snc/enable, snc/gssapi_lib, and snc/identity/as.
  
  
  SAP Documentation: Refer to the official SAP documentation for more details on SNC and user management.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.