You have already created a Delivery Note or Pick Ticket manually or with the Allocation Module.
You want to scan the items picked to make sure they are all correct.
Quantities previously input are shown on the [Product] tab
Pop up message asks you to confirm. Click [Yes]
When you scan a barcode, you want the scanner to send the digits of the barcode followed by a "Return", "Enter", "Tab"to Zedonk.
This means you need to follow the set up instructions to set a "suffix" ( being the "return/enter/tab"). Different scanners typically work in similar ways but you may need to look at your scanner manual to configure it correctly.
..or you can scan the SKU once, then input the total quantity you are picking and click Add
In this case the number of items added will be one less than the quantity you just entered - this is because the system will take into account the one unit that you have scanned.
i.e. entering a barcode adds one unit, entering another barcode adds one unit, entering a quantity of 4 will then add a further 3 units to that last barcode making 4 in total
NOTE that if the Quantity scanned is different from the Exp. (originally on the DN/PT), the new quantity will replace the previous one.