1. What functionality do you use to register customer payments? If you use Bank Deposits the Posted Bank Deposit has a report that displays all invoices applied to that specific payment.
2. otherwise there is no specific report for that, but if you open the Customer Ledger Entries page and filter for document type=Payment you can see the list of payments. If you select a specific payment you can then click on View Applied Entries to see the list of invoices paid by it
3. if you use jet reports you can create a jet report to do it for you, here is an example community.dynamics.com/.../cash-receipt-applied-report
4. there also the Customer Account Detail report but this will display the list of all documents for a customer and will not display what specific invoices are paid by a payment
