Which business function provides a response to customer order inquiries based on resource availability, generating available quantities and delivery due dates?

Which business function provides a response to customer order inquiries based on resource availability, generating available quantities and delivery due dates?

• A. ATP
• B. S&OP
• C. ERP
• D. MRP II

Answer: (A)

Available To Promise answers customer order inquiries by calculating the exact quantity that can be promised now and the delivery date based on current resource availability. It uses on-hand inventory plus scheduled receipts and subtracts already committed orders to determine how much can be promised and when. The delivery date comes from actual lead times tied to production or procurement schedules. This makes ATP the precise function for giving a customer a concrete available quantity and due date in real time. Broader planning activities like S&OP operate at a higher, horizon-wide level to balance supply and demand; ERP is the integrated system that supports such processes, and MRP II expands manufacturing planning to include resources. None of those provide the specific order-by-order promise calculation as directly as ATP.