Legal regulation &: License type & not country-specific

What causes this issue?

You have tried to assign countries to an export license. The license
type that belongs to these legal regulations specifies that countries
cannot be assigned.

System Response

The system does not permit this entry.

How to fix this error?

Please check this combination and, where necessary, maintain it in
Customizing if you have the authorization to do so.
IF &DEVICE&='SCREEN'
<ds:TRAN.VE51>Perform function</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.