Message type: E = Error
Message class: VW - Shipment Processing Output
Message number: 644
Message text: Enter a location combination for which the specification & is valid
You have tried to enter data that is either not defined or is invalid
You cannot continue entering data.
Enter valid data or discontinue the activity.
The error might have occured because the combination of country/
transportation zone has not been correctly maintained in the master
data for the selected location, or that required data is missing.
Error message extract from SAP system. Copyright SAP SE.