A work order created through Supply Planning has its production end date a day before the Demand date. During production, the work order's end date shifts beyond the demand date by a couple of days but still is acceptable for fulfilling that demand. In the meantime, the supply plan is regenerated and the system creates another work order to satisfy that demand. How can the repeat creation of the work order be prevented especially when there is existing work order in the system though it is just a day or two beyond the demand date?