How To Fix CMS018 - You are not allowed to change cross-client Customizing

CMS018 - Overview

• Message type: E = Error

• Message class: CMS - KPro: Content Management Service

• Message number: 018

• Message text: You are not allowed to change cross-client Customizing

What causes this issue?

Changing client-independent Customizing objects is not allowed in your
logon client.

System Response

The function was cancelled.

How to fix this error?

If you still want to make the changes, contact your system
administration, who can assign you a user in a client in which you can
make the changes.

Error message extract from SAP system. Copyright SAP SE.

CMS018 - Details

• The SAP error message CMS018, which states "You are not allowed to change cross-client Customizing," typically occurs when a user attempts to make changes to cross-client customizing settings without having the necessary authorizations. Cross-client customizing refers to settings that apply across all clients in an SAP system, and these settings are usually managed in the client 000 or in a specific client that is designated for configuration.
  
  Cause:
  
  Authorization Issues: The user does not have the required authorizations to make changes to cross-client customizing settings.
  Client-Specific Restrictions: The user may be logged into a client that does not allow changes to cross-client settings.
  System Configuration: The system may be configured to restrict changes to certain users or roles.
  
  
  Solution:
  
  
  Check User Authorizations:
  
  Verify that the user has the necessary authorizations to perform cross-client customizing changes. This can be done by checking the user's roles and authorizations in transaction SU01 or PFCG.
  Ensure that the user has the appropriate