If the invoiced quantity is more than was received, or the price differs from the order, the invoice is held for review. It stops paying for goods that never arrived, at prices nobody agreed.
Two-way match (order to invoice) is used for services where there is no delivery to receive.
How Civova handles it
Civova compares each supplier invoice line with what was ordered and received, reports quantity and price differences, and can hold invoices outside the tolerances you set.