Warehousing Glossary

Navigate the complexities of modern warehousing with our comprehensive warehousing glossary. Strengthen your operational knowledge and make informed decisions by learning key industry terms through clear, practical explanations.

A

ASN

An Advance Shipping Notice (ASN) is a a digital alert from a supplier detailing what is arriving and when, used to speed up receiving.

An Automation Guided Vehicle (AGVs) is a mobile robot used to move materials around a warehouse along predefined paths, improving efficiency and reducing labour demands.

The monitoring oh physical assets (equipment, pallets, tools) through barcodes, FRID or GPS to prevent loss, ensure maintenance and increase utilisation.

Storage at normal temperature for goods that don’t require storage control.

Technologies like barcodes and RFID used for fast, accurate inventory tracking.

B

Backorder

An order that cannot be fulfilled immediately due to lack of stock but will be shipped once inventory is replenished.

A Bill of Lading (BOL) is a core shipping document that details shipment contents and serves as both a receipt and a contrct with the carrier.

A picking method where items for multiple orders are collected in a single trip to improve efficiency.

The process of dividing large shipments or pallets into smaller units for distribution or order fulfilment.

Additional inventory held to protect against demand fluctuations, supplier delays, or unexpected disruptions.

C

Carrier

A company responsible for transporting goods, such as trucking firms, parcel carriers, or freight forwarders.

A periodic inventory check of a small subset of items, used to maintain accuracy without a full physical inventory.

A process where incoming goods are unloaded and immediately transferred to outbound shipments with little or no storage time.

A picking method where workers retrieve full cases (not individual units) for orders.

The total usable storage volume of a warehouse or storage location, often used for slotting and space optimisation.

D

Dead Stock

Inventory that hasn’t sold or moved for a long period and is unlikely to sell without action (discounting, disposal, etc.).

Predicting future customer demand using historical data and trends to plan inventory levels and replenishment.

A distribution method where goods are delivered directly to retail stores, bypassing the warehouse.

A receiving process where products are unloaded, inspected, and immediately moved to storage locations with minimal delay.

A fulfilment method where a retailer sells products that are shipped directly from the supplier or manufacturer to the customer, without warehousing the inventory.

E

Economic Order Quantity (EOQ)

A formula used to determine the ideal order size that minimises total inventory costs, including ordering and holding costs.

The computer-to-computer exchange of business documents (like POs, ASNs, invoices) between partners, reducing manual entry and errors.

A faster-than-standard shipping service used to meet urgent customer demands or resolve delays.

The process of identifying and handling deviations from normal operations, such as missing items, damaged goods, or system discrepancies.

Stock levels that exceed forecasted demand, often tying up capital and storage space.

F

FIFO (First In, First Out)

An inventory rotation method where the oldest stock is used or shipped first, preventing aging or spoilage.

Goods transported by truck, ship, air, or rail, commonly used to refer to both the cargo and the cost of transporting it.

The complete process of receiving an order, picking, packing, and shipping it to the customer.

A measure of how closely actual demand matches predicted demand, critical for planning inventory and reducing stockouts or excess stock.

A standardised classification system (mainly in LTL shipping) used to determine shipping rates based on density, handling, and liability.

G

Goods Receipt (GR)

The process of receiving and confirming incoming goods in the warehouse system, updating inventory levels.

The total weight of a shipment including the product, packaging, and pallet.

A picking process assisted by technology (RF scanners, voice picking, pick-to-light) to increase speed and accuracy.

The recording of vehicles entering and leaving a warehouse or yard, used for security, tracking, and dock planning.

A globally standardised product identifier used in barcodes to ensure accurate tracking across supply chains.

H

Handling Costs

Expenses associated with moving, storing, or managing inventory, such as labour, equipment use, and packaging.

Products classified as dangerous (chemicals, flammables, corrosives) that require special storage, handling, and transport procedures.

Storage systems designed to maximise space utilization, such as pallet flow racks, drive-in racks, or AS/RS solutions.

Stock temporarily blocked from picking or shipping due to quality checks, damage, regulatory requirements, or paperwork issues.

A freight billing unit equal to 100 pounds, commonly used to calculate shipping charges in LTL transport.

I

Inventory Accuracy

A measure of how closely the system’s recorded inventory matches the physical stock in the warehouse.

A metric showing how many times inventory is sold or used within a period, an indicator of efficiency and demand alignment.

All activities related to receiving goods into the warehouse, including transportation, unloading, inspection, and put-away.

The total cost of storing inventory (space, labour, depreciation, insurance, capital cost).

The centralised database of product details, dimensions, weight, SKU number, handling requirements, used by WMS/ERP systems.

J

Just-in-Time (JIT)

An inventory strategy where goods arrive exactly when needed, reducing storage costs and minimising excess inventory.

An approach that keeps extra inventory on hand as a buffer against demand spikes or supply disruptions.

A specific quantity of goods produced or purchased together, often handled or tracked as a single batch.

A logistics model where multiple companies share transportation or distribution resources to reduce costs.

Planning and monitoring the movement of drivers or shipments to ensure efficiency, safety, and compliance.

K

Kanban

A visual inventory replenishment system (often using cards or digital signals) that triggers restocking based on actual demand.

Measurable metrics used to evaluate warehouse performance, such as order accuracy, pick rate, dock-to-stock time, and inventory accuracy.

The process of assembling multiple individual items into a ready-to-ship kit or bundle before picking or packing.

Products shipped disassembled to save space, commonly used for furniture or equipment requiring assembly at destination.

A designation in air freight for trusted shippers whose goods can bypass certain security checks due to verified compliance.

L

Lead Time

The total time between placing an order and receiving the goods, critical for planning replenishment and avoiding stockouts.

An inventory rotation method where the newest stock is used or shipped first (common in non-perishable or bulk environments).

The process of tracking inventory by production batch or lot number to ensure traceability, quality control, and recall readiness.

The process of organising freight on a truck or container to optimise space, weight distribution, and safety.

An individual entry on an order or shipment representing a specific SKU and its quantity.

M

Manifest

A document listing all items, pallets, or cartons in a shipment, used for tracking, verification, and compliance.

The smallest quantity a supplier will sell or a warehouse will order to justify cost and efficiency.

A larger carton that contains multiple smaller units or inner packs, used for efficient storage, handling, and shipping.

Warehouse equipment used to move, lift, or store goods, such as forklifts, pallet jacks, conveyors, and reach trucks.

The process of fulfilling orders from multiple sales channels (online, retail, wholesale) from a central warehouse.

N

Net Weight

The weight of the product alone, excluding packaging, pallets, or containers.

An item tracked for operational use (e.g., supplies, packaging materials) but not counted as sellable inventory.

A product or process that fails to meet quality or specification standards, often triggering a hold or inspection.

Stacking empty or compatible pallets or containers inside one another to save storage or transport space.

The strategic planning of warehouse locations, transportation routes, and inventory placement to maximise efficiency and reduce cost.

O

Order Accuracy

A measure of how correctly customer orders are picked, packed, and shipped, critical for customer satisfaction and cost control.

The core warehouse process of retrieving items from storage to fulfil customer or production orders.

The time from when a customer places an order to when it is prepared and shipped.

All activities related to shipping goods out of the warehouse, including picking, packing, staging, loading, and transportation.

Inventory levels that exceed demand, tying up space and working capital.

P

Pallet

A flat platform used to stack, store, and transport goods with forklifts, pallet jacks, and other warehouse equipment.

A key productivity metric measuring how many items or orders a worker picks within a given time.

The process of moving received goods from the dock to their assigned storage locations within the warehouse.

A document that details the items included in a shipment, used for verification during picking, packing, and receiving.

The strategy used for retrieving items from storage (e.g., batch picking, zone picking, wave picking), influencing efficiency and accuracy.

Q

Quality Control

Processes used to ensure products meet required standards before being stored, shipped, or delivered.

The physical amount of inventory currently available in the warehouse.

Stock that is isolated and blocked from use due to quality issues, damage, inspection requirements, or regulatory holds.

A supply chain strategy focused on minimising lead times and responding rapidly to customer demand through efficient replenishment.

A price estimate provided for transportation, warehousing services, or handling costs before the work is performed.

R

Replenishment

The process of refilling picking locations from bulk storage to ensure enoguh stock is available for order picking.

All activities related to processing returns, refurbishing, recycling, or disposing of products that come back into the supply chain.

A technology that uses radio waves to identify and track items or assets automatically, improving speed and accuracy.

The process of determining the most efficient path for transportation or delivery to reduce cost and improve speed.

A formal approval process allowing customers to return products, used to track and manage returns efficiently.

S

SKU (Stock Keeping Unit)

A unique identifier for each distinct product, used to track inventory levels, movement, and sales.

Extra inventory kept on hand to prevent stockouts caused by demand spikes or supply delays.

The process of determining the optimal storage location for each product to improve picking speed and efficiency.

Temporarily placing picked or received goods in a designated area before loading, shipping, or put-away.

The entire network involved in producing, storing, transporting, and delivering goods from supplier to customer.

T

Third-Party Logistics (3PL)

A company that provides outsourced logistics services such as warehousing, transportation, and fulfilment.

The volume of goods a warehouse can process within a given time, an indicator of overall operational capacity.

A shipping mode where an entire truck is used for one shipment, offering better control and often lower cost per unit.

The ability to track a product’s history, from origin through storage, movement, and delivery for quality, compliance, and recall purposes.

The amount of time it takes for a shipment to travel from its origin to its destination.

U

Unit Load

A single load made up of multiple items (usually on a pallet or in a container) that can be moved as one unit to improve handling efficiency.

A standard barcode used to identify retail products, enabling fast and accurate scanning throughout the supply chain.

A measure of how effectively warehouse resources, space, labour, or equipment are being used.

The process of removing goods from trucks or containers during receiving operations.

The standardised quantity used to track or sell items (e.g., each, case, pallet), essential for accurate inventory records.

V

Value-Added Services (VAS)

A single load made up of multiple items (usually on a pallet or in a container) that can be moved as one unit to improve handling efficiency.

A standard barcode used to identify retail products, enabling fast and accurate scanning throughout the supply chain.

A measure of how effectively warehouse resources, space, labour, or equipment are being used.

Materials used to fill empty space in cartons during packing to protect products in transit.

The physical size or space occupied by inventory, important for storage planning and transportation cost calculations.

W

WMS (Warehouse Management System)

Software that manages and optimises warehouse operations such as receiving, put-away, picking, packing, and shipping.

A picking strategy where orders are grouped into “waves” based on criteria like carrier cutoff, order priority, or product type.

The method of arranging products in the warehouse to maximise efficiency; often based on velocity, size, and picking frequency.

Inventory that is partially completed during manufacturing or assembly processes.

A document confirming that goods have been received and stored in a warehouse, used for tracking and ownership verification.

X

X-Docking (Cross-Docking)

Sometimes abbreviated as X-Docking, it refers to transferring incoming goods directly to outbound shipments with minimal storage.

A term used in some operations to describe a mixed pallet containing multiple SKUs (also called a mixed pallet or rainbow pallet).

A data format often used in system integrations between WMS, ERP, and transportation systems to standardise information exchange.

A size classification for extra-large cartons used in packing and logistics, important for dimensional weight and space planning.

A term used to describe uncertain or unplanned inventory drivers, such as promotional spikes or unexpected returns, impacting forecasts.

Y

Yard Management

The process of controlling and tracking trailers, containers, and vehicles in the warehouse yard to improve flow and reduce delays.

A specialised driver who moves trailers around the yard, docks, and staging areas within the warehouse facility.

A measure of usable output versus total input, often used in manufacturing or kitting to track waste and efficiency.

A physical audit of trailers and containers in the yard to verify location, status, and readiness.

A designated space in the yard for staging, parking, or holding trailers and containers.

Y

Zone Picking

A picking method where the warehouse is divided into zones and pickers are assigned to specific areas to increase speed and reduce travel time.

A strategy that aims to keep no on-hand stock by relying on perfect demand forecasting and frequent replenishment, often used in JIT environments.

A storage strategy where similar items (by size, velocity, temperature, or type) are grouped in dedicated warehouse zones.

A quality concept aiming for error-free operations, often supported by continuous improvement programs in warehousing.

A transport planning method that sorts and routes orders based on ZIP/postal codes to improve delivery efficiency.

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