Lease Purchase Orders

The Procurement team has asked if they can use PO to track/match their copier lease payments. The copiers are not all on the same time-line so my suggestion was to create a PO with 1 line for each copier and the remaining number of payments for each copier as the quantity for each line. We are using Oracle E-Business 12.03.
Does anyone else use PO to track copier (or other leases) in this way?

Thank you.