How does “What to do about one” work on the Duplicate Invoices page?

If a copy is still open, void it in its Xero organisation and the money never leaves — the Fix in Xero column opens the right document. If every copy is settled the cash is out, and the fix is a supplier credit note (or, on the sales side, a refund or credit to the customer before they are chased twice). The Recoverable by voiding figure is the part of the exposure that the first fix still covers; it is the number to clear first, biggest first, which is the table's default order. Where: Duplicate Invoices (/accounts/duplicate-invoices).