View source for Allocating receipts

When payments are received they need to be allocated to one of the following so that an accurate [[statement]] for the [[customer]] can be drawn up.

* Opening balance.
* [[Invoice|Invoices]], either paid in part or in full.
* [[Credit Note|Credit notes]], either paid in part or in full.

If it's not clear which invoices are being paid off (maybe a remittance advice wasn't supplied) the general rule is to pay older invoices first.