How To Fix 01638 - You are not authorized to assign user group &2 to profile &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 01 -

• Message number: 638

• Message text: You are not authorized to assign user group &2 to profile &1

What causes this issue?

You are not authorized to change the assignment for profile &V1& for
users in user group &V2&.

System Response

The profile 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 01638 - You are not authorized to assign user group &2 to profile &1 ?

  The SAP error message 01638, which states "You are not authorized to assign user group &2 to profile &1," typically occurs when a user attempts to assign a user group to a profile without having the necessary authorizations. This error is related to the authorization management in SAP, specifically concerning user profiles and user groups.
  Cause:
  
  Insufficient Authorizations: The user attempting to make the assignment does not have the required authorizations to assign the specified user group to the profile.
  Profile Restrictions: The profile may have restrictions that prevent certain user groups from being assigned to it.
  User Group Configuration: The user group itself may have specific settings or restrictions that limit who can assign it to profiles.
  
  Solution:
  
  
  Check User Authorizations:
  
  Verify the user's authorization profile to ensure they have the necessary permissions to assign user groups to profiles. This can be done by checking the user's roles and authorizations in transaction code SU01 (User Maintenance) or PFCG (Role Maintenance).
  Ensure that the user has the appropriate authorization objects, such as S_USER_AG (User Master Maintenance: Authorization Group) and S_USER_AUTH (User Master Maintenance: Authorization).
  
  
  
  Role Adjustment:
  
  If the user lacks the necessary authorizations, you may need to adjust their roles or create a new role that includes the required authorizations.
  Consult with your SAP security team or administrator to make the necessary changes.
  
  
  
  Profile and User Group Review:
  
  Review the specific profile and user group settings to ensure there are no restrictions preventing the assignment.
  Check if the user group is configured correctly and if it is intended to be assigned to the specified profile.
  
  
  
  Testing:
  
  After making the necessary changes, test the assignment again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Authorization Objects: Familiarize yourself with the relevant authorization objects that control user group assignments.
  SAP Documentation: Refer to SAP Help documentation for detailed information on user management and authorization concepts.
  Transaction Codes:
  
  SU01: User Maintenance
  PFCG: Role Maintenance
  SU53: Display Authorization Check (to analyze authorization issues)
  
  
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP Basis or security team for further investigation.