When a purchase order is matched to an invoice, the purchase order encumbrance is released for the matched amount. In this case, the purchase order encumbrance of $2,500 USD will be reduced by $2,100 USD, leaving a balance of $400 USD. The system will not reserve funds for the invoice because it is matched to a purchase order that has already reserved funds. Funds reservation only happens for non-matched invoices or invoices that are matched to a purchase order with no encumbrance. Reference: Oracle Financials Cloud: General Ledger 2022 Implementation Professional Objectives - Process Budget Journals 12