Guides / Picking methods glossary

Batch, wave, zone or cart picking? A plain-English glossary

Plain-English definitions of batch, wave, zone, cart and discrete picking, plus pick list vs packing slip, and which method fits a small Shopify team.

Warehouse software uses a lot of terms for what's basically "how do we get the right things off the shelf." Here's what each one means for a Shopify team, and which ones are worth your time.

Picking methods

Discrete (order-by-order) picking

One picker, one order, start to finish, then the next order. It's simple and hard to mix up, but slow: the picker walks the same aisles for every order. Fine for a handful of orders a day.

Batch picking

Group many orders and pick the total quantity of each item in one walk, then sort items into orders at the packing bench. It's the biggest single time saver for most small teams, and it's how a Pickadoodl batch works by default.

Cart (or tote) picking

A variation on batch picking: a cart carries one tote per order, and each item goes straight into its order's tote as it's picked. Sorting happens on the floor instead of at the bench. It works well for many small orders. See cart picking.

Wave picking

Batches released on a schedule, like a 9am wave and a 1pm wave, often timed to carrier pickups. If you already pick in a morning and an afternoon run, you're wave picking.

Zone picking

Each picker owns an area of the warehouse and picks only the items in it. Orders pass from zone to zone or get combined at the end. It pays off in big warehouses with several pickers, and is usually overkill below that.

Documents and terms

Pick list
What to pull from the shelves: items, quantities and locations, often across many orders. For the warehouse, not the customer.
Packing slip
What's in one order's box, for the customer and the packer. One per order, usually with the shipping address and a thank-you note.
Bin location
Where an item lives, like A2-3 for aisle A, bay 2, shelf 3. In Shopify, it's often stored in a product metafield.
Pick path
The order a picker walks the bins. A good pick list is sorted to match it.
Short pick
Fewer units on the shelf than the list asks for. The orders that need the item should be held, not shipped incomplete.
Mis-pick
The wrong item, size or variant picked. Scanning catches most of these.
Scan to verify
Scanning each unit's barcode to confirm it matches the list, at the shelf, at the box, or both.
WMS
Warehouse management system: software that runs receiving, storage, picking and shipping across a warehouse. Most small Shopify teams need a pick and pack app, not a WMS.

Which method fits a small Shopify team?

Questions

What's the difference between a pick list and a packing slip?

A pick list tells the warehouse what to pull from the shelves, often across many orders. A packing slip goes in one order's box and lists what that customer ordered.

What's the difference between batch and wave picking?

Batch picking groups orders and picks them together. Wave picking is batch picking released on a schedule, like a morning and an afternoon run.

Is cart picking the same as batch picking?

It's a type of batch picking. Cart picking puts each order's items straight into its own tote as they're picked, so there's no sorting step at the pack bench.

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