A Special Order <SP> allows entry of items requested by the customer that will be ordered and invoiced later. A Special Order is NOT an Invoice but is similar to a Quote. This will not affect your inventory or go on your customer's account. The "Special Order Report" (1.6.8) can be run any time. Once the Special Order is filled, you need to change it to a Debit Order <DI> to finalize the transaction. To create a Special Order, you must change the Order Type to an <SP>.
Vendor Drop Ship
There is a process available to drop ship orders directly from the vendor to the customer. The order is first setup as a Special Order <SP>. The setup and instructions on using this feature can be found in the Vendor Drop Ship section under "Purchase Order Entry and Print" in PURCHASING (3.2.2).