Identifying number for Purchase Order assigned by the orderer/purchaser

XPO01 is the preassigned purchase order number. If a range of purchase order numbers is to be transmitted, use XPO01 for the first number and XPO02 as the ending number.

Identifying number for Purchase Order assigned by the orderer/purchaser

Code designating the system/method of code structure used for Identification Code (67)

XPO03 and XPO04 specify the location to which the purchase order numbers apply.

Code identifying a party or other code