Know what has arrived
Match the delivery to an order and a supplier on your list. Sort it into ambient, chilled and frozen, because that sets which checks it needs.
The receiver has the order open before the tailgate drops, and goes to the chilled lines first.
The first pallet off the truck is dry goods, so the docket gets signed, and the chilled cartons underneath are never read.
Treat a mixed delivery by its most demanding line. When one truck carries goods from several suppliers, read each supplier's goods, since they may have had different journeys.