You can't use negative rates on inventory items, use neg quantity instead

You have an item marked as inventory, but it's a discount or a fee

Problem

Your order sync fails.

Description

You have fees that are marked as inventory parts in QuickBooks. Connex is trying to assign a negative value, but inventory parts only accept positive quantities.

Solution

Change items to service

Here are the steps:

1. This error usually happens with fee items. In QuickBooks, go to lists > item list.
2. Find all the fee items and open the ones marked as inventory parts:
3. In the item name field, add _OLD.
4. In QuickBooks, create a new item.
5. As the type, choose service.
6. Enter the item name again.
7. Resync your sale.