Master data maintenance is not possible in this system

What causes this issue?

The system in which master data is maintained is not the system for
controlling area &V1& for which the master data is intended.
Maintaining master data for controlling area &V1& is possible only in
system &V2&. However, you are currently in system &V3& (definition in
the client).

System Response

Master data maintenance in system &V3& for controlling area &V1& is
rejected.

How to fix this error?

RESET N1
If you do not work with separate systems, there should be no logical
system entered for either the controlling area or for the client.
Informyour system administrator.
If you do work with separate systems, and the current system is
supposed to be the maintenance system for the controlling area, enter
the current system &V3& as the logical system for the controlling area.
If you work in separate systems, and the current system &V3& is indeed
not the maintenance system of the controlling area, change to master
data maintenance in the maintenance system of the controlling area.

Error message extract from SAP system. Copyright SAP SE.