EDI 121 (Vehicle Service) is an X12 transaction set used by carriers to notify a vehicle manufacturer about requested movements or services initiated or performed on motor vehicles and changes in status that occur during the movement.

EDI 850 (Purchase Order) is an X12 transaction set to place a purchase order for goods or services with a vendor as per customary and established business and industry practice.

EDI 870 (Order Status Report) is an X12 transaction set to send reports for the current status of a requirement forecast, complete purchase order, selected line of items on a purchase order, selected items on a purchase order, or all or selected customer-specific purchase orders in their entirety. EDI 870 can also be used to send status reports for running requisitions. It may also be used to update shipment and delivery dates.