Explanation
Select ERS and Use in the Transaction source parameter when running the Pay on Receipt Auto-invoice concurrent program.
You enable paying your supplier by selecting a method on the Purchasing tab of the Supplier Sites window in Oracle Payables.

Explanation
You can pay a prepayment in a currency that's different from the invoice currency. To apply that prepayment to an invoice, the invoice must have the same invoice currency as the invoice currency of the prepayment.

Explanation
When yousubmit a "payment process request", you can enable the Apply credits up to zero amount payment option. Enabling the option causes the payment process to apply credits when the credits reduce the payment amount below zero.
The following scenario illustratethe impact of this option.
Credit Amount Greater Than Invoice Amount
An invoice for 200 USD and a credit memo for 225 USD are due for payment.
The following table describes the payment processing that occurs based on the setting for the Apply credits upto zero amount payment option.
Assume that the "Apply Credits Up to Zero Amount" option is enabled.
Payment processing applies 200 USD of the credit memo to the invoice and creates a payment for 0 USD. The remaining credit is 25 USD.
References:https://fusionhelp.oracle.com/helpPortal/topic/TopicId_P_9F438E13CC89BA0CE040D30A68816F7

Explanation
Run the Payables Unaccounted Transactions Sweep program to transfer unaccounted transactions from one accounting period to another. If your accounting practices permit it, use this program to change the accounting date of the transactions to the next open period.
The program transfers unaccounted transactions to the period you specify by updating the accounting dates to the first day of the new period.
References:https://docs.oracle.com/cloud/farel8/financialscs_gs/FAPPP/F1011880AN1B948.htm