I have one account but that one account is divided into savings and checking. It's the same account number but they are differentiated by a dash at the end. Such as 123456-01 for savings and 123456-02 for checking. I was unable to include the dash so I could not specify that the transfer should come from my checking. I hope it's taken from the correct account (there isn't enough funds in savings to cover the transfer). This is worrisome.