Regional structure group &1 is not allocated to a regional structure area

What causes this issue?

Regional structure group &V1& is not allocated to a regional structure
area.

System Response

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

How to fix this error?

You must do one of the follwing:
Enter a regional structure group with a valid allocation.
Check the allocation of regional structure group &V1& in Customizing.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.