A customer paid an invoice via credit card. They paid more then they wanted to in the moment, and want the excess refunded. How do i record this payment refund, so that the portion I'm refunding going back to "outstanding" on the invoice?
More detail: Customer paid $40,000 via credit card by accident. They only wanted to pay $10,000 for the time being. How do i record the $30,000 refund that i will give the customer via check, so that they invoice balance reflects that the customer still needs to pay the $30,000 at a later date?