The Process verb is used to request processing of the associated noun by the receiving application or business to party. In a typical external exchange scenario a Process BOD is considered to be a legally binding message. For example, if a customer sends a ProcessPurchaseOrder BOD to a supplier and the supplier acknowlegdes with a positive AcknowledgePurchaseOrder, then the customer is obligated to fullfil the agreement, unless of course other BODs are allowed to cancel or change the original order.