The write-off feature allows for any expense your business needs to be accounted for when it comes to your revenue.
In X-1FBO you will see that some invoices show an A/R balance in your main Holding Account screen. If there is an A/R balance, invoices will remain open, therefore one of the options here is to apply a write-off.
Below you will find the steps to create a write-off in Accounts Receivable: