I am testing your system to decide whether I want to migrate or not. Some of my customers overpaid their invoices and I need to record the overpayment and then issue a refund. These customers pay by installments so for example, they have an invoice of $100 which they pay in four instalments of $25 each. If the customer inadvertently makes 5 payments of $25 it should record all five payments, then show a credit balance, and then I do the refund.
However, once the first four instalments are applied, there is then no option for me to add one more payment and credit the credit balance. How do I record over payments?
Thanks,
Nikki