Design checkout, payment and shipping

Payment methods, shipping rates, stock locations and document numbering: the rules a buyer meets at checkout.

Everything here is decided once and then answers thousands of checkouts without anyone touching it. That is also why it deserves care: a shipping matrix with no pallet band, or a number range your ERP cannot parse, is discovered by a customer rather than by you.

Work through the articles in order. Payment and shipping decide what a buyer can choose; stock decides what you can promise; number ranges decide whether the documents are accepted at the other end.