This feature lets you choose which date is used to validate the expiration of an ingredient batch when making a physical reservation from a bill of material (BOM) or formula line. You can choose to validate the ingredient expiration date against the date of the reservation (Reservation date), or against the date the product is scheduled to be finished (Production scheduled end date). If the system finds that the requested ingredient batch has an expiration date previous to the selected validation option, it won't allow the reservation.