A traditional order is usually used to buy from a supplier in the absence of other forms of sales contracts. If a sales contract exists, orders can be placed in different ways. Delivery plan shipments (consisting of a head and the actual delivery plan) are delivered to the supplier who orders him to make deliveries of the relevant material on the dates indicated. The delivery plan is a long-term sales contract in which you deliver the delivery plans whenever the needs change or within predefined time intervals. The definition of the difference between an order and a sales contract can be confusing. Fortunately, with the right information, it`s actually very easy to understand the difference between the two. Time has nothing to do with the difference between the two.