If I select this icon, I get the "Prepayment or Final Invoice Entry" page where it indicates the full amount in the "Left to be invoiced:" field. If I select the Process Invoice button on the bottom of the screen , I get an error: "There is no non-invoiced payments for this order. If you want to issue final invoice, select delayed or cash payment terms."

  This error seems to be appropriate, because if I manually pull up another invoiced order (that does not have that icon), I get the same error if also select the Process Invoice button.

  Other than that icon displaying, I do not find any problems related to an invoice that has not been recorded elsewhere in FA.

  Thanks.