Effect on an Account by the Purchase Order Reopen Document: When a POR document is submitted, the amount re-encumbered by the document is not the same as the original PO document. In the above example, the encumbered amount by the original PO was 1,000. Then, the POC document disencumbered 900. Finally, the POR document re-encumbered the amount disencumbered by the POC document. You may see the effect on the account from the General Ledger Pending Entries inquiry screen by listing the transactions by the Reference Document Number that stores the PO number.