A measure (usually expressed as a percentage) of satisfying demand through inventory or by the current production schedule in time to satisfy the customers' requested delivery dates and quantities. In a make-to-stock environment, level of service is sometimes calculated as the percentage of orders picked complete from stock upon receipt of the customer order, the percentage of line items picked complete, or the percentage of total dollar demand picked complete. In make-to-order and -design-to-order environments, level of service is the percentage of times the customer-requested or acknowledged date was met by shipping complete product quantities. Syn: measure of service, service level.
A production planning method that maintains a stable production rate while varying inventory levels to meet demand. Syn: level strategy, production leveling. See: level schedule.