Supply Chain Glossary
/ Letter P
Glossary — Letter P
6 supply chain, inventory, and fulfillment terms starting with P. Plain-English definitions for e-commerce merchants.
Periodic Inventory
An inventory tracking method where stock counts and records are updated at set intervals — weekly, monthly, or quarterly — rather than continuously.
Perpetual Inventory
An accounting method that continuously updates inventory records in real time as products are received, sold, or transferred, rather than at periodic intervals.
Pick and Pack
Pick and Pack: a key concept in supply chain and ecommerce fulfillment for Shopify brands.
Pick, Pack, and Ship
The warehouse fulfillment process of selecting items from storage (pick), packaging them (pack), and handing them to a carrier for delivery (ship).
Purchase Order (PO)
A formal document issued by a buyer to a supplier specifying the products, quantities, and agreed prices for a planned inventory order.
Purchase Order Management
The end-to-end process of creating, tracking, approving, and reconciling purchase orders with suppliers to ensure timely and accurate inventory replenishment.
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