The purpose of the AcknowledgePurchaseOrder Business Object Document is to acknowledge receipt of the Purchase Order and to reflect any changes. Commonly, the acknowledgment is generated by an order management application and transmitted to a purchasing or procurement application. Is where the information that the BOD message carries is provided, in this case AcknowledgePurchaseOrder. The information consists of a Verb and one or more Nouns. The verb (Acknowledge) indicates the action to be performed on the Noun (PurchaseOrder).