If you have access to the "Customer Reports" module in Advantage Back-office you will be able to view the "Customer Payment Allocations" report.
This report will show the payments that have been allocated to whichcustomers and invoices?
1. In Advantage Back-office, click the left sidebar menu.
2. Open the Customers menu.
3. Click on Customer Reports.
4. Select report 308 - Customer Payment Allocations, by clicking on it.
5. Click on the "Show Report" button.
6. If required, tick the Select Transaction dates checkbox, and select the From and to dates from the drop-down date pickers.
7. You can change the report date that will reflect on the report.
8. Click on the Fetch button.
9. This report can be exported to the following file formats: Microsoft Excel, Acrobat PDF and Text CSV.