Picking
Guided picking on the handheld
In Chainlink WMS, picking is allocated by FEFO or FIFO and performed on the handheld. The app shows location, product, lot and quantity in route order, and each pick is confirmed with a scan.
- Available in
- All plans
- Allocation
- FEFO or FIFO
- Each pick is validated by
- Location, product, lot and serial number
Reviewed October 29, 2026 by the Business in a Wave team
How the location and lot are allocated
When an outbound document is released, Chainlink allocates stock to each line.
- FEFO: the lot that expires first is picked first (definition)
- FIFO: the stock received first is picked first (definition)
- Stock in quarantine, blocked or damaged is never allocated
- A shortage is visible before the picker walks to the rack
Outbound documents are entered on the web, sent through the API or uploaded from CSV or XLSX.
How the picker works
Success, warning and error each have a distinct sound and vibration, so the picker knows the result without looking at the screen.
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The app shows the pick
Location, product, lot and quantity.
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The picker confirms
The picker scans the location and the product and enters the quantity.
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The app moves to the next pick
The app advances automatically until the pick list is closed.
What the app rejects
The app issues three warnings, each with the data needed to correct the pick. Their level of enforcement depends on the configuration.
- A location other than the one assigned to the pick
- A lot other than the allocated one, with strict FEFO
- A serial number that is not in the location
Shortages, several pickers and pick faces
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Stock missing at the location
Chainlink reallocates the quantity to another location with stock, or holds it until an Administrative user approves the shortage.
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Several pickers on one order
The document is split by zone, and each pick list has a lead and helpers.
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Pick face replenishment
When a pick face reaches its minimum, Chainlink creates a replenishment task from reserve stock, by FEFO.
Plan comparison
Essentials applies FEFO as a fixed setting. Professional and Enterprise allow rules by warehouse, zone, category or product.
| Feature | Essentials | Professional | Enterprise |
|---|---|---|---|
| Guided picking with location, lot and serial number (FEFO or FIFO) | Yes | Yes | Yes |
| Split by zone, with a lead and helpers | Yes | Yes | Yes |
| Pick face replenishment | Yes | Yes | Yes |
| Configurable rules: strict FEFO, location confirmation, shortage approval | No | Yes | Yes |
| Webhook when a pick list is completed | No | Yes | Yes |
How it is configured
Help center articles with the steps inside Chainlink.
Keep reading
Frequently asked questions
For any other question, contact sales.
Does picking work without a signal? +
Picking requires a connection to start and to close. Counts work fully without a signal.
What happens when an order does not have enough stock? +
When the document is released, the line shows an allocation shortage on the document’s Allocation tab. Chainlink does not allocate stock that is in quarantine, blocked, damaged or in blocked locations.
Can a full pallet be picked? +
Yes. If the entire content of the pallet belongs to the pick list, one scan of its label confirms every pick it covers. If the pallet holds an item the pick list does not request, the app reports it and no stock is moved.
Subscribe to Chainlink online
Your instance is created when sign-up is complete, ready to set up your warehouse.
Essentials and Professional are purchased online by card: the first month and the implementation are charged at subscription. 30-day trial by invitation: request it from sales.