ERP
Warehouse Management
Zone Picking: How It Works, When It Beats Batch and Wave Picking, and WMS Setup
Last updated: October 11, 2026 · Independent guide · We do not sell rankings or coverage.
Zone picking divides the pick area into zones and assigns each picker to one zone, so a picker only ever picks the SKUs stored in that zone. An order that needs items from several zones is either passed from zone to zone (pick-and-pass) or picked in all zones at the same time and merged afterward (parallel, or synchronized, zone picking). Zone picking pays off once single pickers walking the whole building lose more time to travel and congestion than a zoned team loses to handoffs and consolidation.
The zone picking process at a glance
- Profile orders and SKUs: measure lines per order, SKU count, velocity and how many zones a typical order would touch.
- Choose the zone model: pick-and-pass, parallel (synchronized), or zone picking combined with batch or wave release.
- Design and size the zones: set zone boundaries, map bins to zones and set the pick sequence inside each zone.
- Release work: group orders into waves or a continuous stream and generate pick tasks by zone.
- Pick and hand off: pickers work their zone and pass totes or stage partial orders.
- Consolidate and pack: merge partial orders at a consolidation station, then verify and pack.
- Balance and rebalance: watch zone workload daily and move people, SKUs or boundaries when one zone becomes the bottleneck.
When zone picking beats batch and wave picking
The de Koster, Le-Duc and Roodbergen literature review in the European Journal of Operational Research (2007) estimates order picking at as much as 55% of total warehouse operating expense and, citing Tompkins et al., names travel as often the dominant component of a picker’s time. Batch picking cuts travel by picking several small orders in one tour. Wave picking is a release method that groups orders into scheduled windows, often tied to carrier cutoffs, and can sit on top of any picking method. Zone picking cuts travel by shrinking each picker’s area, but as the review notes, “orders are split and must be consolidated again before shipment to the customer.”
No published research gives a single SKU count or lines-per-order threshold at which zone picking wins. The profile below reflects the trade-offs in that literature and is a starting point for your own time study.
| Method | Order and SKU profile where it tends to pay off | Main cost | Consolidation needed |
|---|---|---|---|
| Discrete (one picker, one order) | Low volume, small building, few SKUs, or large orders that fill a cart | Long travel per order as SKU count grows | None |
| Batch | Many small orders (one to three lines) that share SKUs, moderate SKU count | Sorting picked units back to orders | Sort to order, at the cart or a put wall |
| Pick-and-pass zone | Large SKU count, multi-line orders, conveyor or cart flow between zones, steady order mix | Handoff waits and the slowest zone setting the pace | Built in, as the tote travels |
| Parallel (synchronized) zone | Large SKU count, multi-line orders, tight cutoffs where order cycle time matters most | Staging space and consolidation labor | Yes, at a consolidation station |
Most growing operations end up with a hybrid such as zone-wave or zone-batch, which NetSuite’s explainer (September 9, 2021) also lists.
Stage 1: Profile orders and SKUs
Owner: operations manager or industrial engineer, with order data from the ERP or WMS. Inputs: 8 to 12 weeks of order lines, SKU master with cube and weight, current bin map. Outputs: lines per order distribution, SKU velocity ranking, and an estimate of zones touched per order under each candidate layout.
The figure that decides most designs is zones touched per order. If most orders touch one zone, zone picking behaves like discrete picking with less walking; if most touch four or five, consolidation becomes the main workload. The usual mistake is profiling an average week and missing peak.
Stage 2: Choose pick-and-pass or parallel zone picking
Owner: operations manager. Inputs: order profile, layout, conveyor or cart options, cutoffs. Output: a documented zone model.
In pick-and-pass, which the literature calls progressive zoning, one picker starts the order and hands the tote and pick list to the next zone, and the order is only finished after visiting every relevant zone. It needs little staging space, but each tote waits on the slowest zone it visits, so one overloaded zone stalls everything downstream. Zone-skipping conveyors reduce the wait at a capital cost.
In parallel or synchronized picking, pickers in several zones start on the same order or batch at once, and partial orders are merged afterward. Cycle time is shorter, but you need consolidation space, labor and a system that knows when an order is complete.
Stage 3: Design and size the zones
Owner: operations manager with the WMS administrator. Inputs: zone model, velocity ranking, storage constraints (temperature, hazmat, high value, bulk versus each pick). Outputs: zone records, bins assigned to zones, pick sequence within each zone.
Zone size is a trade-off. In Le-Duc and de Koster’s model of a synchronized system (Erasmus University report ERS-2005-029-LIS, 2005), larger zones increase route time but reduce consolidation because orders spread over fewer zones. In their case study, 18 zones gave the shortest throughput time for small orders and 6 zones performed best for very large orders. The direction holds generally: the more lines per order, the fewer and larger your zones.
Some zones are fixed by the product, such as freezer, cage or bulk pallet areas. Size the rest by expected workload, not square footage; slotting decides how much work lands in each zone, so see our guide to warehouse slotting software before drawing boundaries. Inside each zone, set a bin sequence that follows the walking path, because systems such as NetSuite WMS and Extensiv use it to order picks.
What goes wrong: equal-length zones that concentrate fast movers in one place, and bins left without a zone, which creates an “unassigned” pool nobody owns.
Stage 4: Release work and generate pick tasks
Owner: shift supervisor or wave planner. Inputs: allocated orders, cutoff times, staffing by zone. Outputs: waves or streamed tasks split by zone, each with a recommended bin.
The control here is release discipline. Too much work floods consolidation with incomplete orders; too little leaves zones idle. In parallel picking, release orders that share a cutoff together.
Stage 5: Pick and hand off
Owner: zone pickers and zone leads. Inputs: pick tasks on RF or mobile devices. Outputs: picked totes passed on or staged by order.
When three pickers touch one order, a wrong item is hard to trace unless each pick is scanned. Require bin and item scan confirmation and record the picker ID on each line. Our analysis of what mis-picks cost distributors shows why this control is worth the extra seconds.
Stage 6: Consolidate and pack
Owner: consolidation or pack lead. Inputs: partial orders from each zone. Outputs: complete, verified orders ready to pack and ship.
A consolidation station can be staging bins, a put wall with a light per order slot, or a sortation conveyor; the system must know which partials belong together and when the last has arrived. The common failure is the orphan order: three of four zones have delivered, the fourth is waiting on a short pick, and the partial misses the cutoff. Set a dwell-time alert on partially staged orders and give one person ownership of clearing them. Short picks often trace back to bin inaccuracy, which a steady cycle counting program reduces.
Stage 7: Balance and rebalance workload
Owner: operations manager, reviewed daily by shift supervisors. Inputs: lines per zone per hour, queue depth at each zone. Outputs: staffing moves, re-slotting requests, boundary changes.
The 2007 review stresses that zoned workload must be balanced across pickers. In pick-and-pass, imbalance shows as totes queuing at the busy zone; in parallel picking, as orders waiting in consolidation for one zone. Cross-train pickers to move within a shift, and change boundaries or slotting when imbalance persists for weeks.
Illustration (constructed numbers, not a benchmark): a distributor ships 1,800 orders a day at an average of 4.2 lines, or 7,560 lines. At an assumed 100 lines per person-hour, that is 75.6 person-hours. If zone A holds the fastest movers and carries 40% of lines, it needs 30.2 person-hours, or about 3.8 pickers on an 8-hour shift, while zone D at 15% needs about 1.4. Even staffing would leave zone A as the bottleneck all day, so staff to line share or move some fast movers out.
Who does what: stage table
| Stage | Responsible | Accountable | Key control |
|---|---|---|---|
| Profile orders and SKUs | Analyst or engineer | Operations manager | Include peak weeks in the data |
| Choose zone model | Operations manager | DC or operations director | Test against zones touched per order |
| Design and size zones | WMS administrator | Operations manager | Every pick bin assigned to a zone |
| Release work | Wave planner | Shift supervisor | Release volume capped by staging capacity |
| Pick and hand off | Zone pickers | Zone lead | Bin and item scan on every pick |
| Consolidate and pack | Consolidation staff | Pack lead | Dwell-time alert on partial orders |
| Balance workload | Shift supervisors | Operations manager | Daily lines-per-zone review |
Metrics to track
- Lines picked per person-hour, by zone: WERC’s DC Measures survey uses “Lines Picked and Shipped per Person Hour” at building level. Measure it per zone too, because the building average hides the bottleneck.
- Zone workload balance: each zone’s share of lines against its share of labor hours.
- Consolidation dwell time: time from the first partial of an order reaching staging to the last. Track the average and the share of orders over target, since the long tail misses cutoffs.
- Zones touched per order: rising values mean consolidation work is growing faster than order volume.
- Handoff or queue wait (pick-and-pass): time totes spend waiting at a zone entry.
- Order picking accuracy and short-pick rate: errors per line, traced to zone and picker.
- Order cycle time: release to ready-to-ship, compared with cutoff times.
Published benchmarks sit mostly behind paid reports, so compare against your own baseline measured for two to four weeks before you switch methods.
How software supports each stage
NetSuite WMS. NetSuite has the clearest public setup path of the four. You create zones at Lists > Supply Chain > Zone > New, assign bins to a zone with an optional sequence number at Lists > Supply Chain > Bin > New (Oracle recommends at least one zone per 4,000 bins), and rank zones in a pick strategy at Lists > Supply Chain > Pick Strategy > New. The “Enable Zone Picking” system rules for single and multiple orders, under WMS Configuration > Configure Warehouse > System Rules, apply to locations with bins and orders released in waves. Partials from different zones are staged in the same bin per order, and “Always Merge Items During Staging” makes that mandatory. The documentation we reviewed describes staging-bin consolidation only and does not mention put walls.
Manhattan Active WM. Manhattan’s 2024 brochure lists zone and cluster picking, picking and allocation rules by zone (such as dry, fridge and freezer), task prioritization by zone, and task building that sequences picks to reduce travel. Order Streaming runs wave and waveless release together, and Manhattan states integration with put walls and sortation. Configuration documentation is not public, so we cannot quote menu paths; expect a partner-led implementation.
Fishbowl. Fishbowl’s public material describes location groups, a Picking location type, a Pickable checkbox and a Sort Order control for locations within a group (September 21, 2018). The Fishbowl Warehouse page mentions “strategic routing” for picking. We found no public documentation of zone-based pick assignment or consolidation, so ask for a demonstration before buying for a multi-zone operation.
Extensiv 3PL Warehouse Manager. You set pick routes per location with a numeric Pick Path value at Warehouse > Manage Locations; without it, picks follow alphanumeric location order (September 11, 2025). Multi-order pick jobs from Orders > Find Orders batch orders that share SKUs for picking in SmartScan. The help center did not describe zone assignment when we checked, so zoning there depends on pick path ranges and how you split pick jobs.
How we researched this
We read the top-ranking pages for “zone picking” (from ShipBob, NetSuite, DCL Logistics and Infios, all of which sell fulfillment services or WMS software), then used primary sources: university research on order picking and each vendor’s own documentation, checked on October 11, 2026. Where a vendor publishes no configuration detail, we say so.
Related guides
- Bin Location System: How to Set Up Warehouse Locations
- Cross-Docking Software: Planned vs Opportunistic Flow
Frequently asked questions
What is the difference between zone picking and wave picking?
Zone picking decides where each picker works: one zone each. Wave picking decides when work is released: in scheduled groups, often tied to carrier cutoffs. The two are often combined, with each wave split into zone pick tasks, as NetSuite WMS does.
Is pick-and-pass or parallel zone picking faster?
Parallel picking usually gives a shorter order cycle time because zones do not wait on each other. Pick-and-pass needs less staging space and no consolidation station, but every order moves at the pace of the slowest zone it visits.
How many zones should a warehouse have?
There is no fixed number. Research by Le-Duc and de Koster (2005) shows that larger zones increase pick travel while smaller zones increase consolidation work, and in their case study more zones suited small orders while fewer zones suited very large orders. Start from your lines per order and the number of zones a typical order would touch.
What is consolidation dwell time?
It is the time between the first and last partial pick of an order arriving at the consolidation area. Long dwell times mean one zone is behind or a short pick is holding the order.
Does NetSuite support zone picking?
Yes, NetSuite WMS supports zone picking for single and multiple orders through system rules, for locations that use bins and orders released in waves. Partial picks from different zones can be staged in the same bin per order.
Sources
- de Koster, R., Le-Duc, T. and Roodbergen, K.J., Design and control of warehouse order picking: a literature review, European Journal of Operational Research 182(2), 2007. pure.eur.nl
- Le-Duc, T. and de Koster, R., Determining Number of Zones in a Pick-and-pack Orderpicking System, ERIM Report ERS-2005-029-LIS, 2005. repub.eur.nl
- Oracle NetSuite, Configuring Records for Locations With Bins (zones and bins), no date shown, checked October 11, 2026. docs.oracle.com
- Oracle NetSuite, Defining Pick Strategies, no date shown, checked October 11, 2026. docs.oracle.com
- Oracle NetSuite, System Rules for NetSuite WMS, no date shown, checked October 11, 2026. docs.oracle.com
- Oracle NetSuite, Picking Orders from a Zone, no date shown, checked October 11, 2026. docs.oracle.com
- Oracle NetSuite, Zone Picking for Multiple Orders, no date shown, checked October 11, 2026. docs.oracle.com
- Oracle NetSuite, Pick Task Sorting and Recommended Bins, no date shown, checked October 11, 2026. docs.oracle.com
- NetSuite (vendor), What Is Zone Picking?, September 9, 2021. netsuite.com
- Manhattan Associates (vendor), Manhattan Active Warehouse Management brochure, 2024. manh.com asset
- Manhattan Associates (vendor), Manhattan WMS and the Advantage of Order Streaming, 2023. manh.com
- Fishbowl (vendor), Looking at the Location Module, September 21, 2018. fishbowlinventory.com
- Fishbowl (vendor), Sifting Through the Picking Module, April 6, 2018. fishbowlinventory.com
- Fishbowl (vendor), Fishbowl Warehouse product page, no date shown, checked October 11, 2026. fishbowlinventory.com
- Extensiv (vendor), Enabling Pick Paths, September 11, 2025. help.extensiv.com
- Extensiv (vendor), Creating Pick Jobs, April 9, 2026. help.extensiv.com
- Extensiv (vendor), Picking Multiple Orders, May 21, 2026. help.extensiv.com
- WERC, DC Measures Survey 2025 (survey questionnaire listing metric definitions), no date shown. werc.org
- ShipBob (3PL), Zone Picking: Guide, Benefits, and How it Works in the Warehouse, November 24, 2025. shipbob.com
Sherman Hsieh
Independent analysis of enterprise software — ERP, CRM and more
