Photograph a box — the app reads the PO number off it and finds the PO in Logiwa.
Or type the PO number:
Which purchase order are these boxes for?
A pallet with boxes from several POs. Enter every PO on it — each box is put on its PO from the number printed on the box, and you pick when that can't be read.
Each photo should show the PO number (on a multi-PO pallet, that is how the box finds its PO), the size/quantity grid (or the factory case label) and the license-plate sticker. Keep photographing — boxes are read in the background.