If you are the business owners, , your admin or  staff prepare all payment voucher manually and then  take it up into the system by your accountant, weeks later.
You will have this problem.

1. This is double work
2. The amount may be seriously bigger than this $60 in excess in the next error
3. You are giving your supplier a better cash flow
4. Additional work to undo the error

The correct way is to directly enter into the Realtimme Cloud payment system by the admin staff, and offset against any outstanding supplier invoice and print out a payment voucher directly. In this way, you will totally prevent overpayment.