How To Fix 01634 - Reference user &2: No authorization for group &1 for role &3, system &4

SAP Error Message - Details

• Message type: E = Error

• Message class: 01 -

• Message number: 634

• Message text: Reference user &2: No authorization for group &1 for role &3, system &4

What causes this issue?

Reference user &V2& has the role assignment &V3& for system &V4&. You
are not authorized to change this role assignment for users in user
group &V1&.
Background
By entering a reference user for a user, the user is granted the
authorizations of the reference user. These authorizations are withdrawn
from the user when you remove this reference user.
The system checks whether the user administrator is allowed to manually
enter and remove these authorizations using role and profile
assignments. If the check fails, the assignment of the reference user
cannot be changed.

System Response

The reference user's assignment was not changed.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 01634 - Reference user &2: No authorization for group &1 for role &3, system &4 ?

  The SAP error message "01634 Reference user &2: No authorization for group &1 for role &3, system &4" indicates that a user is attempting to access a role or authorization group for which they do not have the necessary permissions. This error typically arises in scenarios involving user roles, authorizations, and security settings within the SAP system.
  Cause:
  
  Missing Authorizations: The user (reference user &2) does not have the required authorizations for the specified authorization group (&1) associated with the role (&3) in the specified system (&4).
  Role Assignment Issues: The role may not be properly assigned to the user or the user may not be part of the necessary authorization group.
  Profile Issues: The user’s profile may not include the necessary authorizations to access the specified role or group.
  Transport Issues: If the role was recently transported from another system, it may not have been properly assigned or activated in the target system.
  
  Solution:
  
  
  Check User Authorizations:
  
  Use transaction code SU01 to check the user’s authorizations.
  Verify if the user has the necessary roles assigned that include the required authorization for the group.
  
  
  
  Review Role Configuration:
  
  Use transaction code PFCG to review the role configuration.
  Ensure that the role includes the necessary authorization objects and that the authorization group is correctly assigned.
  
  
  
  Assign Missing Roles:
  
  If the user is missing the required role, assign it using transaction SU01 or through mass user maintenance if applicable.
  
  
  
  Authorization Group Check:
  
  Check if the authorization group is correctly defined in the role and that the user is authorized to access it.
  
  
  
  Profile Generation:
  
  If changes were made to the role, ensure that the profiles are generated again in PFCG to reflect the changes.
  
  
  
  Transport Issues:
  
  If the role was transported, ensure that the transport was successful and that all necessary objects were included.
  
  
  
  Consult Security Team:
  
  If you are unable to resolve the issue, consult your SAP security team for assistance in reviewing the user’s authorizations and role assignments.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SU01: User Maintenance
  PFCG: Role Maintenance
  SUIM: User Information System (to analyze user authorizations)
  
  
  
  Authorization Objects: Familiarize yourself with the relevant authorization objects that may be linked to the role and authorization group in question.
  
  
  Documentation: Review SAP documentation on user roles and authorizations for best practices in managing user access.
  
  
  By following these steps, you should be able to identify and resolve the authorization issue causing the error message.