Warehouse reference · Logistics & WMS foundations
Units of measure and pack hierarchy
Units of measure explain what a quantity represents: each, inner pack, case, pallet, or another agreed unit. A pack hierarchy connects these units through defined conversions. Quantity without a unit is an incomplete instruction.
How it works in practice
Establish the base unit and valid transaction units. Verify conversion factors, barcode associations, rounding rules, and whether packaging changes create a new item configuration. Test receiving and shipping in different units.
A warehouse example
Ten cases containing twelve each represent 120 each. If the interface sends ten without the case unit, the receiving system may record one twelfth of the intended quantity.
Illustrative scenario, not a claim about a client engagement.
What to watch for
Not every pallet contains a fixed count, and not every item supports fractional units. Catch-weight and variable-pack products need explicit rules rather than a universal conversion assumption.
A useful question
Can a pack-size change be traced through orders, labels, inventory, and reports?
Terminology and configuration differ by product. These notes explain general concepts and are not operating instructions for equipment, a compliance determination, or a replacement for your site’s approved procedures.
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