A projected level of customer demand for a feature (option, accessory, etc.) of a make-to-order or an assemble-to-order product. Used in two- level master scheduling, it is calculated by netting customer backlog against an overall family or product line master production schedule and then factoring this product’s available-to-promise by the option percentage in a planning bill of material. Also see: Assemble-to-Order, Planning Bill of Material, Two-Level Master Schedule.