Region &1 is not defined for country &2

What causes this issue?

Region &V1& is not defined for country &V2&.

System Response

Error message

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.

Check your entry.
If you have the appropriate authorization, create region &V1& for
country &V2&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.