Country & region & city & is not defined &

What causes this issue?

You have not defined the specified country code, region and city code in
table T005G.

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?

Check your entry. If it is necessary, maintain the table T005G for this
combination.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.