Automatic matching of payments to multiple invoices can be activated in the settle_multiple_invoices item in Invoicing / Settings / General. Set the item to 1.
In Invoicing / Settings / Bank / Rules, add a payment matching rule for payment amounts that are higher than invoice amounts.
Example
Payment amount: 150 EUR
There are two unsettled invoices: 50 EUR each.
ISPadmin finds an unsettled invoice according to the payment matching rules. One of the invoices for 50 EUR is settled.
The rest (100 EUR) is transferred to the client’s account overpayment.
The system automatically applies the overpayment to the other unsettled invoice during the next run of the payment-invoice matching process.
Invoices are settled only from the overpayment created on receipt of the payment.
The rest (50 EUR) remains in the client’s account.
If there is a payment matching rule for payment amounts that are lower than invoice amounts, the system will perform partial invoice settlement.
