This error occurs when our system cannot match line items on the order to line items in QuickBooks. We create a dummy item called unknown_do_not_delete when our system can neither match not create a new item. When this is removed and nothing can be created, orders will fail. Here are the steps to resolve this issue:
- Open QuickBooks.
- On the home page, go to items and services located on the top right.
- Add a new non-inventory item called unknown_do_not_delete and another non-inventory item called discount. Do not delete this items, ever.
- Run the Intuit Sync Manager.
- Contact us to resync the order.