PO (Purchase Order)

Amazon & D2C glossary · Harpy Media

A PO (Purchase Order) is the formal commercial document that triggers fulfilment: which goods, in what quantities, at what prices, to be delivered when. Between a seller and a factory it authorises production; between Amazon and a vendor it is the order the vendor is obligated to serve.

What is PO?

A PO (Purchase Order) is the formal commercial document that triggers fulfilment: which goods, in what quantities, at what prices, to be delivered when. Between a seller and a factory it authorises production; between Amazon and a vendor it is the order the vendor is obligated to serve.

The weight of the document depends on which side you are on. For sellers buying from suppliers, the PO is the control that keeps quality, payment, and timing aligned. For vendors receiving Amazon’s POs, it is a compliance instrument — with acknowledgement windows, delivery requirements, and financial consequences for getting it wrong.

Issuing POs that protect you

A purchase order should be specific enough to be enforced: exact specification, unit price, quantity, packaging requirements, delivery dates, inspection rights, and payment terms. Sellers who order by informal message and then dispute a defect discover that there is nothing to hold the supplier to — no agreed specification, no inspection clause, no paper trail.

Payment structure belongs in the document too, because it is the strongest lever available. Tying part of the balance to a successful inspection before shipment concentrates the factory’s attention on quality at exactly the right moment. And a formal PO creates the record that makes a later claim possible.

Serving Amazon’s POs as a vendor

On the vendor side, timeliness is scored. Read every PO line against the fulfilment window, acknowledge within the required period, and ship to the right facility, on time, in the right quantities. A PO accepted late, or shipped short without acknowledgement, becomes a compliance defect and a chargeback — so the operational discipline is reading POs the day they arrive rather than the week they are due.

The other half is capacity honesty. Accepting an order you cannot fill damages your metrics more than declining or amending it formally would; the acknowledgement process exists precisely so that a shortfall is declared in advance rather than discovered at the dock.

In practice

A brand selling ceramic mixing bowls knows its daily velocity is around 40 units and its total lead time 45 days. It issues a formal PO for 3,000 units with a 30% deposit and the balance payable on successful third-party inspection. The factory signs, the run lands on schedule and on specification, and the stock arrives as inventory dips into the safety buffer — no gap in availability and no capital wasted on excess.

How Harpy Media helps

Procurement discipline is part of our supply chain work: purchase orders that carry specifications and inspection terms, and vendor-side PO handling that keeps acknowledgement and delivery compliance clean.

PO FAQ

What does a purchase order do?

It formally authorises a supply of goods — specifying products, quantities, prices, and delivery dates. It is the commercial record that makes quality, timing, and payment disputes resolvable.

What happens if I miss an Amazon PO deadline?

For vendors, missed or partial fulfilment against an order generates compliance defects and chargebacks, and repeated failures affect your standing. If you cannot fill an order in full, acknowledge the shortfall formally rather than shipping silently.

How do I decide when to issue a PO?

Use the reorder point: average daily sales multiplied by lead time, plus safety stock. Issue when stock reaches that level — earlier during peak seasons or when lead times lengthen.