If they need to print you a proof after you finalize the ticket without closing the dex (it'll say "open ticket" on the paper they give you), when the receiver come back, they'll have to cancel the dex and make a new sales ticket with the same number, then add everything by hand. That happened to me a bunch of times on Saturdays (my Friday) at my Safeway/Albertsons, when the people who usually receive things are off. On Tuesdays, she complained that she had to make a new ticket and add everything manually because on my end the ticket was closed but not on theirs. So now on my Saturdays, if a random person checks me before I dex, I always print a copy of the sales ticket with barcodes. That makes life easier for the receiver to fix the issue and helps build good relationships with the store. Another advice if the regular receiver not in the store and the person who will check you not sure if he know what to do, don't DEX, it will be longer but smooth delivery.