Using a one-time cost adjustment for short-term SPAs
Use short-term special pricing agreements (SPA) for a one-time cost adjustment. For example, you are taking an order from a customer who is ordering 5000 feet of wire, and you have 2000 in stock. You contact your vendor and negotiate a volume-based "cost" for an additional 3000 feet.
Transaction data for the line items are processed when you finish the order and complete invoice processing.