'Each' Versus Case And Pallet: When To Use Unit-Level Tracking

Each is the lowest commonly sold or handled individual unit in a product packaging hierarchy. Choosing whether to track inventory at the each, case, or pallet level changes storage, labor, and accuracy outcomes across a warehouse. This article compares the levels and explains when to invest in each-level control versus aggregated tracking.

The packaging hierarchy typically stacks: each → inner pack → case → pallet. Companies decide where to maintain inventory balances based on order profiles, SKU velocity, handling costs, and systems capability. High-velocity consumer goods often require strict each-level tracking, while industrial supplies with bulk ordering may be managed at the case or pallet level.

How The Levels Differ

Each: Single sellable unit, scanned per transaction and used for ecommerce, retail, and B2C orders. Case: A secondary pack containing multiple eaches; often moved as a unit in B2B replenishment. Pallet: The transport unit containing many cases; used for inbound/outbound freight and cross-dock operations.

• Visibility: Each-level tracking gives the finest visibility but requires more scans and data volume.
• Speed: Case/pallet level can speed receiving and shipping for high-volume, single-line wholesale transactions.
• Accuracy: The more granular the unit, the lower the risk of picking errors for single-item orders, but the higher the operational overhead.

When To Track At The Each Level

Track at the each when you regularly fulfill single-unit orders, sell direct-to-consumer, or integrate with retail POS. If your ecommerce channel generates many one- or two-item orders, each-level accuracy reduces customer returns and shipping corrections.

• Ecommerce/DTC Sales: High proportion of single-each orders demands piece-level accuracy.
• High SKUs Velocity: Fast movers need each-level replenishment triggers to avoid stockouts.
• Regulated Products: Serialized items (electronics, healthcare) require each-level traceability for recalls or warranty claims.

When Case Or Pallet Tracking Is Preferable

If your customers order by the case or pallet and you seldom open master packs, tracking at those levels reduces handling and system load. Warehouses supporting wholesale distributors or bulk industrial customers often benefit from aggregated tracking.

• Low SKU Variety And Large Order Quantities: Fewer scans, faster processing when orders move whole cases or pallets.
• Cross-Dock And Transloads: Freight-centric flows where goods move rapidly between carriers without breaking units.
• Storage Efficiency: Storing full cases on pallet racking optimizes space compared with piece picking.

Hybrid Strategies

Many operations use hybrid models: track fast-moving SKUs at the each, keep slow movers at the case or pallet level, and use break-pack stations to convert case inventory to each stock on demand. A WMS that supports multi-level UOM conversion is essential for hybrid approaches.

Cost And Labor Tradeoffs

Each-level management increases scanning, cycle counts, and potential staging time at pack stations, which translates to labor cost. However, the reduction in mispicks, returns, and shipping disputes often offsets those costs for B2C-heavy operations. For B2B-focused warehouses, the labor savings from handling larger units usually wins.

Practical Example

A fashion retailer with both wholesale and online channels keeps SKUs in case-level inventory for wholesale but mirrors a portion of stock into each-level pick locations for online orders. When a case is opened for ecommerce picks, the WMS decrements case inventory and increments each inventory at the break-pack location, keeping counts synchronized.

• Implementation Tip: Create clear SOPs for break-packing and require barcode scanning at the conversion point to prevent phantom inventory.
• Technology Tip: Use cartonization logic that respects each-level dimensions when packing ecommerce parcels to avoid oversize charges.

In short, the Each is the most granular inventory unit and should be used where order profiles, compliance, or customer expectations demand it. For other flows, case or pallet tracking can be more efficient; hybrid models bridge both worlds if the WMS and processes are designed to keep conversions accurate.