I put an invoice as paid by accident how do you change the status of this please?

Hello Dave, Welcome to the Community! To remove the payment on the invoice, if you click onto the invoice itself and in the top right click on the writing that says 1 payment next to paid and then on the date it will take you into the payment itself(make sure to check it says receive payment on the transaction and that you are not still in the invoice itself) then go to more on the black banner at the bottom and delete. This will then open the invoice back up as unpaid. Any Q's just reply back on this thread.