3PL and Fulfillment Glossary: The Terms in Your Quote, in Plain English

The first 3PL quote most brands see is half acronyms. ASN, DIM, FEFO, LTL, VAS, SLA. Nobody wants to admit on a sales call that they don't know what a pallet position is, so they nod, sign, and find out what it meant on the first invoice.

This glossary covers the terms you'll actually run into when you're choosing and working with a 3PL, grouped by where they show up. Each one is in plain English, with a note on what to ask where it matters.

The basics

3PL (third-party logistics provider). A company that stores your inventory and picks, packs, and ships your orders for you. Also called a fulfillment company or fulfillment service. Full explanation: what is a 3PL.

4PL (fourth-party logistics). A company that manages your logistics as a whole, including managing one or more 3PLs on your behalf.

Fulfillment center. A warehouse built to ship individual orders quickly. Usually the building a 3PL runs your orders out of.

DTC (direct to consumer). Orders shipped to individual customers, usually from your own website.

B2B (business to business). Orders shipped to retailers, distributors, or other businesses, usually in cartons or pallets.

Omnichannel or multichannel. Selling through more than one channel, like your site, Amazon, and wholesale, often from the same inventory.

SKU (stock keeping unit). One unique product variant. A t-shirt in three colors and four sizes is 12 SKUs. SKU count drives how much space and how many pick locations you need.

UPC or GTIN. The barcode number that identifies a product. Retailers and marketplaces usually require it.

Lot number. A batch identifier from production. Lets you trace or recall one batch instead of your whole inventory.

Receiving (getting product into the warehouse)

Inbound. Inventory arriving at the warehouse.

ASN (advance shipping notice). A notice you or your supplier send telling the warehouse what's arriving, when, and in what quantities. Many 3PLs charge more, or receive slower, when inventory shows up without one.

Receiving fee. What the 3PL charges to unload and enter inventory into its system. Can be per container, pallet, carton, unit, or labor hour. Ask which, because it changes the number a lot.

Floor-loaded vs palletized. Floor-loaded means cartons stacked loose in the container, so someone has to unload them by hand. Palletized means cartons arrive already on pallets. Floor-loaded containers cost more to receive.

Pallet. The wooden platform product ships and sits on. The common US size is 48 by 40 inches.

Dock-to-stock time. How long it takes from your product hitting the dock to being available to sell. Get this number in writing. Slow receiving means stockouts even when your product is sitting in the building.

Cycle count. Counting a portion of inventory on a rolling schedule instead of shutting down for a full count. Keeps inventory accurate year round.

Storage

Pallet position. One spot in the racking that holds one pallet. Storage is often billed per pallet position per month.

Bin or shelf storage. Smaller storage for small or slow items, usually billed per bin or shelf.

Cubic foot storage. Billing by the actual space your product takes up rather than by pallet.

Rackable vs non-rackable. Rackable pallets fit standard racking. Oversized, overweight, or unstable pallets get stored on the floor, usually at a higher rate.

Long-term storage fee. An extra charge on inventory that sits too long. Ask about the threshold before you send a year of slow-moving stock.

FIFO, FEFO, LIFO. Rules for which units ship first. FIFO is first in, first out. FEFO is first expired, first out, which matters for food, supplements, and beauty. LIFO is last in, first out.

Climate controlled. Storage that holds a temperature range. Different from refrigerated or frozen, which need dedicated cold rooms. See cold chain fulfillment.

Cold chain. Keeping temperature-sensitive product within its required range from the warehouse to the customer's door.

Hazmat. Hazardous materials, like lithium batteries, aerosols, and flammables. Needs certified handling and storage by hazard class. See hazmat 3PLs.

Orders

Pick and pack. Pulling the items for an order off the shelf (pick) and packing them into a box with a label (pack). Usually billed as a fee per order plus a fee per additional item.

Order cutoff. The time of day an order must arrive to ship the same day. A 2pm cutoff and a noon cutoff are different businesses during a sale.

Units per order. The average number of items in one order. Changes your pick and pack cost more than most brands expect.

Kitting. Assembling multiple items into one sellable unit, like a gift set or subscription box. Usually priced per component or per kit.

Bundling. Selling several SKUs together as one product. The 3PL's system needs to know which components to pull and reduce from inventory.

VAS (value-added services). Anything beyond basic pick and pack: kitting, inserts, gift wrap, labeling, custom packaging.

Inserts. Flyers, thank-you cards, or samples added to each order. Often a per-insert fee.

Order accuracy. The share of orders shipped with no error. Every 3PL claims 99.9 percent. Ask how they measure it and over what period.

Backorder. An order for an item that's out of stock, held until inventory arrives.

Split shipment. One order shipped in more than one package, often because one item was out of stock.

Shipping

Carrier. The company that delivers the package: UPS, FedEx, USPS, DHL, or a regional carrier.

Zone. How far a package travels, which sets the shipping price. More zones crossed means more cost and more transit time.

DIM weight (dimensional weight). A billing method where carriers charge based on box size, not just actual weight. A big light box can cost more than a small heavy one. Your 3PL's box selection directly affects this.

Surcharges. Extra carrier fees on top of the base rate, like residential delivery, fuel, peak season, and oversized or extra-handling packages.

Parcel. Individual packages, usually under 150 pounds, shipped by carriers like UPS and FedEx.

LTL (less than truckload). Freight that takes up part of a truck, typically a few pallets, sharing the trailer with other shippers.

FTL (full truckload). Freight that fills, or pays for, a whole truck.

FCL and LCL. Full container load and less than container load, for ocean freight. FCL is a whole container of your goods. LCL shares a container with other shippers.

Drayage. Trucking a container from the port or rail yard to the warehouse.

Cross-docking. Moving inbound freight straight to outbound trucks with little or no storage in between.

White glove delivery. Delivery that includes extra service, like bringing the item inside, assembly, or packaging removal. Common for furniture and large items. See oversized fulfillment.

Last mile. The final leg of delivery, from the carrier's local facility to the customer's door.

Multi-node fulfillment. Shipping from more than one warehouse so orders travel shorter distances and arrive faster.

Returns

RMA (return merchandise authorization). The approval and tracking number for a return.

Disposition. What happens to a returned item: restock, refurbish, liquidate, or destroy.

Returns grading. Inspecting a return and deciding whether it's sellable as new. Speed matters here. Inventory stuck in returns is inventory you can't sell.

Amazon terms

FBA (Fulfillment by Amazon). Amazon stores your inventory and ships your Amazon orders. Explained alongside the other options in 3PL vs fulfillment center vs warehouse vs FBA.

FBM (Fulfilled by Merchant). You, or your 3PL, ship Amazon orders instead of Amazon.

SFP (Seller Fulfilled Prime). Shipping Amazon Prime orders yourself, or through a 3PL, while meeting Amazon's delivery standards. Get a 3PL's SFP capability in writing.

MCF (Multi-Channel Fulfillment). Amazon shipping orders from your other sales channels using inventory stored in FBA.

FBA prep. Labeling, bagging, bundling, and packing inventory to Amazon's requirements before it goes into Amazon's warehouses.

FNSKU. Amazon's own product barcode, used to track your units inside FBA.

Retail and B2B terms

EDI (electronic data interchange). The standard way large retailers exchange orders, shipping notices, and invoices electronically. Common documents include the 850 (purchase order), 856 (advance ship notice), and 810 (invoice).

Routing guide. A retailer's rulebook for how to ship to them: labels, carton sizes, pallet build, carriers, and appointment times.

Chargeback. A penalty a retailer deducts from your payment when you break its routing guide. Ask a 3PL which retailers it ships to today and what its chargeback history looks like.

GS1-128 label. A standardized carton or pallet label that many retailers require.

OTIF (on time, in full). A retailer metric for whether your shipment arrived on schedule with everything on the order.

Systems

WMS (warehouse management system). The software the 3PL uses to track your inventory and run its operation.

OMS (order management system). Software that collects orders from your channels and routes them to the right warehouse.

ERP (enterprise resource planning). Your back-office system for inventory, purchasing, and accounting.

Integration. The connection between your store or ERP and the 3PL's WMS. It can be native, through middleware, or custom built. Know which one you're buying, and who fixes it when it breaks. More on this in our Shopify 3PL guide.

Middleware. A separate tool that sits between your store and the warehouse to pass orders and inventory back and forth.

API. A way for two systems to talk to each other directly. "We have an open API" means you can connect to them, not that the connection is already built.

Source of truth. The one system everyone agrees has the correct inventory count. Usually it should be the WMS.

Contracts and pricing

Rate card. The 3PL's list of standard fees. Useful, but it isn't your price until it's applied to your real volume. See the per-pallet pricing breakdown.

Minimum. A monthly floor you pay regardless of volume. Always convert it to dollars at your real volume, including your slowest month.

Onboarding or setup fee. A one-time charge to set up your account, integration, and SKUs.

Account management fee. A recurring fee for your account manager and reporting.

RFQ (request for quote). A structured request for pricing, sent to several providers with the same requirements so the answers can be compared. See our 3PL RFQ guide.

SLA (service level agreement). The written performance commitments, like ship time, accuracy, and dock-to-stock time, and what happens when they're missed. "We aim for 99 percent" is not an SLA.

Inventory liability. What the 3PL reimburses if your product is lost or damaged, how much, and how fast. Often capped. Read this section closely.

Shrinkage. Inventory that goes missing. Ask how it's measured and what the contract says about it.

Rate lock. How long your rates are guaranteed before the 3PL can raise them.

Auto-renewal. A clause that renews the contract automatically unless you give notice by a certain date. Put that date on your calendar the day you sign.

Termination notice. How much notice either side has to give to end the contract. If you're leaving, read how to switch 3PLs first.

Volume forecast. The order volume you tell a 3PL to expect, which it uses to set your rates. Make it real. A 3PL once priced a brand at its stated 3,000 orders a month. The first three months came in at 1,100, 900, and 1,050, and the 3PL was losing money on the account. That relationship was broken before it started.

Want help reading your quotes?

If you've got quotes in hand and can't tell which one is actually cheaper, that's the work we do. We send an anonymized brief to providers that fit your operation and rebuild every quote into the same line items, so you're comparing prices instead of formats. Providers pay our fee. Brands put down a refundable deposit so we only take on serious searches, and when you sign, we pass it to your 3PL as a credit on your first invoice. Tell us what you ship.