Error on payment

i use version 1.5.3
and when i try to make a payment for an invoice and the price i type is bigger than the invoice i get an error i also tried in your demo and same error there.

Menu Payments -> Enter Payment
for example invoice with 50€
i add in amount 60€ and press save button.
comes with error

ps: it should get the payment and keep the balance of the client

Why would you type 60 while your client ows you 50?

it was just an example… if client own me 50.19 and he give me 51 euro or 50.20 he must take the balance in his account

Sorry, but deposits or client balances are currently not supported in Invoiceplane.

See Online Payment - Partial Payments / Deposit