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Pick and Pack Services
The piece is the unit of cost; the order is the unit of promise
Pick and pack services sit where an ecommerce operation stops being about inventory and starts being about one person's expectation. Upstream everything is measured in cartons, pallets and lead times. Downstream a customer measures one thing: whether the right object arrived, undamaged, when it was said to arrive. In between, work is charged by the piece and promised by the order — and that gap is where service levels are earned or lost.
Which is why comparing pick and pack services on price alone produces bad answers: a provider can be cheaper per pick and dearer per delivered order, because the cost of a wrong unit — replacement shipment, refund, marketplace defect metric, review — lands on the seller and never appears in the per-piece number.
Four picking methods and the order profile each one suits
| Method | How it works | Suits | Breaks down when |
|---|---|---|---|
| Discrete (single-order) | One picker walks one order start to finish | Multi-line orders, high-value goods, kitting | Volume rises: travel time per order stops shrinking |
| Batch | One picker collects the same SKU for many orders in one trip; the batch is divided at a bench | Single- or two-line orders with a deep common tail of bestsellers | The sort step bottlenecks, and one mis-sort propagates through the batch |
| Zone | Each picker owns an area; a tote travels between zones | Wide catalogues, large pick faces, multiple shifts | Zone handoffs lose orders, and the balance between zones is never even |
| Wave | Orders released in timed groups aligned to carrier collection | Fixed dispatch cut-offs and a predictable daily shape | A late release delays the wave; one slow zone holds up the collection |
Real floors run hybrids — batch inside a zone, released as a wave — and the mix should follow the order profile, not a house preference. The diagnostic is short: take a month of orders and plot lines-per-order against units-per-line. A profile dominated by one unit per line rewards batching; six lines per order rewards discrete or zoned picking. An operator who cannot tell you which shape your volume has will run whichever method the floor is already set up for.
What actually produces a wrong pick
Mis-picks are rarely carelessness. They are conditions that make two things look alike, and conditions are designable.
- Neighbouring variants. A black size-M and a black size-L in adjacent bins with near-identical packaging are the highest-risk pair in any catalogue. Separating variants by more than one location is a slotting decision, not a training one.
- Packaging changes upstream. A factory alters a carton colour or label position and the visual cue a picker has trusted for months stops being true.
- Substitution without a rule. When a location is empty somebody decides what to do. If the rule is not written and enforced in the system, the decision is made on the floor, at speed, by the person least equipped to make it.
- No scan verification. Picking to a paper list yields an accuracy figure that depends entirely on who is working the shift. A scan at the point of pick makes confirmation independent of the picker.
- Label collision. Two SKUs sharing a supplier barcode, or a marketplace identifier applied over the original, produces a scan that confirms the wrong thing with total confidence.
- Peak fatigue. Errors climb in the final two hours of a doubled shift, which makes peak labour planning an accuracy question before it is a capacity one.
The pack bench: carton choice, void fill and dimensional weight
Packing looks like the cheapest step and is often the most consequential, because carriers bill the greater of actual and volumetric weight. A carton one size too large adds filler and billable volume; one too small crushes. The answer is a carton range matched to the operation's real order profile rather than a single standard box.
Three further decisions happen at the bench. Protection — void fill is a function of fragility and of how many handovers the parcel will survive, and a parcel crossing a border changes vehicles more often than a domestic one. Enclosures — invoices, returns labels, inserts; for sellers shipping under somebody else's brand this is a confidentiality question, and blind delivery means no supplier documentation of any kind reaches the consumer. Label and marking — it must stay legible for the whole journey, which argues against a paper label on the outer face of a polybag. Packing is also a channel decision: courier express, an economy parcel product, a dedicated line and a consolidated DDP movement each demand something different from the pack.
Scan points, KPIs, and how the numbers get diluted
A pick scan confirms location and SKU. A pack scan confirms what went into which carton at what weight. A handover scan confirms the sealed parcel passed to a named carrier at a recorded time. Two scan points leave a hole: without the handover record, a missing parcel becomes an argument about whether it ever left. With three, chain of custody is a set of timestamps instead of a set of recollections, and a support ticket turns from an investigation into a lookup.
Accuracy is the metric most quoted and least defined. One operation can report three figures from the same month:
| Definition | Denominator | What it hides |
|---|---|---|
| Unit accuracy | Units picked | The most flattering, because multi-unit orders dilute one error across many correct picks |
| Line accuracy | Order lines | A one-line order that is wrong looks identical to a twelve-line order with one mistake |
| Order accuracy | Orders shipped | Which line inside a multi-line order failed. It flags a bad order without locating the fault |
Ask which of the three is quoted, and how it is measured: against scan records, or against complaints received. Complaint-based accuracy is not a measurement but a lower bound, filtered by how many customers bother to write in. Two more belong in any serious agreement — on-time dispatch, the proportion of pre-cut-off orders that physically left that day, which is a different claim from "same-day processing"; and exception ageing, how long a problem stays open before escalation, because an unresolved query at hour forty-eight has usually already become a refund.
Eight questions for a pick and pack provider
- Which picking method will my order profile run under, and what does my lines-per-order distribution look like on your floor?
- Is there a scan at each of the three points — picking, packing, handover — and can I see all three timestamps for one named order?
- How is accuracy defined and measured, and what was last month's figure on that definition?
- What is the written substitution rule when a location is empty?
- How are similar variants slotted relative to each other?
- What carton range do you hold, and how is volumetric weight managed on my lanes?
- State your daily cut-off in a named time zone, then give the share of orders arriving before it that physically left inside that window last month.
- Can you ship without supplier documentation inside the parcel, for sellers who need blind delivery?
How this is run at FulfillDock by SBT
Our own cut-off sits at 16:00 China time: an order in by then leaves the building that working day and its tracking number goes live the same evening. That describes our floor, not the carrier's road. Nothing is gated by volume, since there is no minimum to clear. Fifty-plus channels reach more than fifty countries, and which of them carries a given parcel is decided order by order rather than settled once for the whole account. Mis-picks and mis-ships are recorded below 0.01% of the order lines shipped, not of the orders placed, and an exception draws a response inside two hours and a resolution inside twenty-four from one named English-speaking account manager. Behind it sit three linked sites — Shenzhen, Suzhou and Dongguan — summing to 24,000 m². For the wider chain the pick sits inside, see Order Fulfillment Process; for what a failure looks like when it happens, Fulfillment Exceptions.
Frequently asked questions
What are pick and pack services?
The piece-level half of order fulfilment: retrieving the exact units an order calls for, verifying them, choosing and preparing packaging, applying the carrier label and handing the sealed parcel to a transport provider. Storage and inbound receiving sit either side of it; pick and pack is what converts inventory into an order.
How are pick and pack services usually charged?
By components rather than one figure: a charge per pick or per unit retrieved, a charge per order packed, packaging materials, storage for the space occupied, and the outbound carrier charge itself. Requesting a quote against your own volume profile is the only fair comparison, because the split between those components differs sharply between operators.
What is a good pick accuracy rate?
Meaningless without its definition, since unit-level, line-level and order-level accuracy come from the same month and produce different numbers. Order-level accuracy is what a customer experiences. Ask which definition is used, whether it derives from scan records or from complaints, and how it behaves in peak weeks rather than on average.
Are pick and pack services the same as order fulfillment services?
No. Order fulfillment services cover the whole chain, from the moment an order enters a system through delivery and any subsequent exception; pick and pack is the physical middle of it. A provider offering only pick and pack executes instructions. One offering the full chain also owns the inventory record, the channel decision, the documentation and the resolution when something goes wrong.
