What this is about
If an amount is still due (BT-115 > 0), the invoice must state a due date (BT-9) or payment terms (BT-20).
What to do
Enter a due date or payment terms (“Payable within 14 days”).
Does the error keep coming back?
Then it is not chance but a pipe connected the wrong way. The free 15-minute check finds the spot.
Arrange a check