Purchase orders: what the document commits you to

Offer, acceptance and the battle of forms

An order is generally an offer that becomes binding when the supplier accepts it, and both parties usually attach their own standard terms. Where those conflict, which set governs depends on the sequence of communications and on the applicable law, so the practical protection is a signed agreement that states which terms prevail rather than reliance on whose document arrived last. Legal effect varies by jurisdiction and should be confirmed with qualified advice.

The fields that carry the risk

Beyond item and quantity, the consequential entries are the price basis and currency, the delivery point and date, the acceptance criteria, the payment terms, and the delivery term governing where cost and risk transfer between the parties. On cross-border orders the last of these is what the Incoterms rules exist to standardise, and leaving it blank or naming a term without a place leaves the most expensive question in the transaction unanswered.

Blanket agreements and call-offs

Where supply is continuous, a framework agreement fixes commercial terms while individual releases pull quantity against it. This separates the commercial negotiation from the operational signal, allowing schedules to flex without renegotiating price. The critical detail is which portion of the schedule is firm — creating liability for material or finished goods — and which is indicative, because suppliers will otherwise treat the entire horizon as either binding or worthless.

Change, cancellation and the receipt record

Amendments have to travel the same authorisation route as the original, or the control chain breaks and the invoice will not match. Cancellation exposure depends on what the supplier has already committed, which is why liability for raw material and work in progress should be defined in advance. At the far end, the goods receipt is the evidence that closes the loop, and quantity or condition discrepancies must be recorded at that moment rather than argued about at invoice.

Frequently asked questions

Can a supplier refuse an order after issuing a quotation?

Often yes, depending on whether the quotation was expressed as a firm offer, whether it remained open, and what the applicable law provides. This is why businesses relying on continuity secure commitment through an agreement with defined volumes rather than through the order alone.

Why must an order exist before the invoice arrives?

Because matching requires three independent records: what was authorised, what was received and what is being charged. Where the order is created after the invoice to enable payment, the control becomes ceremonial and no longer detects unauthorised commitment or overcharging.

What is the difference between an order and a delivery schedule?

The order establishes the commercial commitment; the schedule communicates timing and quantity within it. Under a framework arrangement one order can carry many scheduled releases, which keeps the commercial terms stable while operations adjust the flow.