You can find this section in HostBill Admin → Setting → General Settings → Billing → Credit notes
Credit notes are documents that indicate the money coming out/owed to customer. This document is mostly used to indicate refund.
If you enable credit notes, your refund menu (Invoice → More actions → Refund invoice) will allow you to select invoice items that will be refunded.Those items will be used to create another document called Credit note.
This option allows to decide what numeration to apply to the credit notes. You can choose to:
If you decide to use separate numeration for credit notes, this option lets you choose the number that will be used for next generated credit note, it will be incremented each time credit note is created.
Each credit note number can be sufixed with month (MM), year (YYYY), yearmonth (YYYYMM) or your custom sufix composed with available variables:
Use {$y}
for the year, {$d}
for the day, {$m}
for the month,
Decide if you want to allow credit notes for unpaid invoices.
If the customer decides to downgrade their package you can issue the credit note for the pro-rated amount. You can decide to: