Good job for making sure that our customer balances are correct, sandraq.
We can a QuickReport for our Acccounts Receivable accounts to see if there are invoices that are unpaid an payments that are still unapplied. Let me show you how:
From there, we can double-click on the transaction to see if it's a duplicate or it still needs to be paid. I also suggest reaching out to an accountant before we delete or pay them just not to mess up our books.
If you need help, you can always mention me. Thanks!