"Error Processing Payment: We can only reverse out 1 team invoice at a time currently."
This error is sometimes triggered when trying to move payments from one team to another.
This is caused by the pre-existence of an invoice on each team for that customer.
In this case you must reverse the first team payment and apply it as a credit to the customer's account.
Then you may add a payment to the second team using the account credit as your payment type in the checkout screen.