The Order Type normally defaults to DI (Debit Invoice), although you can change the default Order Type in "POS Defaults and Comments" in SYSTEM MANAGEMENT (10.2.6.2 field 32 page 3).
To change the Order Type, press the Up Arrow key and change the "Order Type" by typing in the two-letter abbreviation from the list found below, then press <ENTER>.
Order Types are:
Internal Transfer <TI> (Multi-Location Operations Only)