Invalid Reference Id: The account you are trying to use has been deleted.
This error occurs when an account on the bill has either been deleted, or the connection has been broken. The deletion can occur in either Bill.com or QuickBooks.
SolutionCheck the chart of account(s) on the bill to make sure they are not deleted and if they are, re-code the deleted account(s).
If everything on the bill/invoice is active and this error persists after re-coding, or the bill/invoice itself is deleted in either Bill.com or QuickBooks, contact Bill.com customer support.