Shipment Schedule Acknowledgement of Purchase Order is an acknowledgement document used by a seller to inform a buyer that the goods they have ordered have been received and the shipment schedule has been confirmed. It is typically used in business-to-business (B2B) transactions and is used to confirm delivery dates and any other details related to the purchase order. There are two types of Shipment Schedule Acknowledgement of Purchase Order: 1) Pre-shipment Acknowledgement: This is an acknowledgement that the goods have been received by the seller and are ready to be shipped. It usually includes the date of shipment and the method of delivery. 2) Post-shipment Acknowledgement: This is an acknowledgement that the goods have been successfully shipped and the buyer has been notified of the delivery details. It typically includes the date of delivery and any other relevant tracking information.