Transform AP can handle partial receipts. In most cases, this will result in a workflow task being created for user intervention so that the individual will be required to validate the information is correct.
If an order has partially received and a PO invoice is received for the same or lower quantities and prices, it will automatch.
If the order is partially received and a PO invoice is received for the entire order, it will most likely fail the automatch therefore the workflow will create an exception task.