1. Select Invoicing from the navigation menu, and then select Past Due Invoices.
2. Find the overdue invoice you want to write off, and then click the Show Invoice icon.
3. On the Invoice page, click Write Off Invoice.
4.When the popup message appears, click OK to write off the invoice.
Note: Once an invoice has been marked as written off, it cannot be edited or marked as paid.
This invoice will still be visible on the Customer page in the Resolved section, showing the Written off status and the date that it occurred.