A global document refers to a shipment where the final delivery details (customer sites and quantities) are not known at departure time.
Example: A company sells baked goods and delivers them to several customers' sites. The truck leaves with 1,000 units of baked goods, but it is not know how many will be delivered to each customer site. When all the deliveries are complete, the detail / normal shipping note is created and linked to the global document.
If the current record ponds to the example above, you must select the Global document check box for the record to be associated with the final transport and to disable the fields relating to the global transportation.
Otherwise, do not select Global document to link the record to a global document.