How To Fix ATO_CUSTOMER191 - Namespace of user is &1. Please assign User to Namespace &2.

ATO_CUSTOMER191 - Overview

• Message type: E = Error

• Message class: ATO_CUSTOMER - ATO Messages for the End User

• Message number: 191

• Message text: Namespace of user is &1. Please assign User to Namespace &2.

What causes this issue?

You want to change an item with namespace <(>&<)>2 but your user is
assigned to namespace <(>&<)>1.

System Response

A change of items with namespace <(>&<)>2 is not allowed as long as your
user is not assigned to this namespace.

How to fix this error?

Please go to the app Extensibility Settings and assign your user to
namespace <(>&<)>2

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.

ATO_CUSTOMER191 - Details

• The SAP error message ATO_CUSTOMER191 indicates that there is an issue with the namespace assignment of a user in the SAP system. This error typically arises when a user is trying to perform an action that requires them to be assigned to a specific namespace, but they are not currently assigned to that namespace.
  
  Cause:
  
  Namespace Assignment: The user is not assigned to the required namespace. In SAP, namespaces are used to organize and manage objects, and users must be assigned to the appropriate namespace to access or modify those objects.
  User Role/Authorization: The user may not have the necessary roles or authorizations to access the namespace.
  
  Configuration Issues: There may be configuration issues in the system that prevent the user from being recognized as part of the required namespace.
  
  
  Solution:
  
  
  Assign User to Namespace:
  
  Go to transaction code SU01 (User Maintenance).
  Enter the username that is causing the error and click on the "Change" button.
  Navigate to the