Initially, I had created an invoice for my client which I had titled 'Quote'.
I made the client pay a 10% deposit on that Invoice, to confirm the acceptance of the quote, prior to start the project.
Once the project was finished, I modified this very Invoice so that it would suit the actual times and items, which in turn changed the total figure of the invoice to which a deposit had already been taken. Total of the final invoice was less than the original quote.
As a consequence, the revised Invoice showed a small amount 'Paid' left of the Balance, but this amount was actually not taken off the Balance, which in turn made the Client to overpay the invoice. (payment received was the Balance as shown, $693.00, but not what was owed, being 687.50).
This payment was made by Direct Deposit, so when I went to apply the amount paid in the system, I could not manually enter the actual payment received as the system would not accept an overpayment for this account.
As such I had to enter the 'system determined' amount of $687.50, which in turn the client received to the email as payment confirmation, however, this contains the wrong amount.
The error here is obviously that the 'deposit paid' amount has changed from the original to the modified invoice, which it did not. The 'deposit paid' should have remained the same, since it was the deposit paid.
I will have this situation again in the near future, how to avoid this? I did not want to cancel the original invoice since it had already a downpayment applied, and as such represents an accepted quote.
