Hello,
We have two customers who share the same boss. Customer A has a payment with some remaining balance, while Customer B has some open invoices. The customer has informed us that they no longer want to issue checks and have asked us to use Customer A's remaining balance to offset Customer B's open invoices.
I cannot simply void Customer A's payment because it has already been partially applied to some of Customer A's own invoices.
What is the best way to accomplish this?