The put wall operator scans each item. The tote of batch picked items has many different SKUs bound for multiple customer orders. After each scan, the operator is light directed to the correct put location on the put wall. The packing operation occurs on the back side of the put wall.
In the second version of put wall, operators pick the quantity of one SKU required for multiple orders and sends it to the put wall, for example twenty pieces of one SKU in a donor tote. Once the SKU is scanned, the lighted directed put wall directs one to this location, three to that, and so on.
In a third version, the SKU buffer (Dematic Multishuttle), delivers totes, typically with one SKU in each tote, to the put wall. For each SKU, the put operator removes what is required from the donor tote (light directed) and then the donor tote goes back to the Multishuttle buffer. The items are typically placed in order containers. Configurations vary from 1:1, 1:6, 1:12, 1:24 or more. Order containers could be cardboard boxes or totes.