Scheduled receipts come in two flavors: open production orders and open purchase orders. They need to be accurate on quantity and order due date. Note the emphasis on the word order. Material Requirements Planning doesn’t need to know the operational due dates and job location of production orders in a job shop. It does need to know when the order is due to be completed, and how many pieces remain on the order. Don’t make the mistake of thinking that plant floor control must be implemented first in order to get the numbers necessary for Material Requirements Planning.