Definition
Case pack (or carton quantity) is the number of units packed in one master carton from the supplier. Orders and FBA inbounds are often rounded to whole cartons to avoid broken-case fees and packing errors.
Worked example
A SKU has a case pack of 24. Your raw suggestion is 100 units. Rounded up to case pack that becomes 120 units (5 cartons).
Why it matters for replenishment
Ignoring case packs creates awkward warehouse receipts and can break Amazon carton constraints on inbound shipments.
How OmniRestock uses this
OmniRestock rounds draft PO quantities to case pack as well as MOQ when those fields are set on the product.