Flight Circle has Inventory Tracking.
Our QBO Integration will reduce the amount of product sold. Example, if you sell items in Flight Circle it will reduce the amount you have on hand in QBO. Our integration does not support item quantity increase. So if you need to update item quantity then update it in both Flight Circle and QBO.
Note: To track inventory, the items in Flight Circle QBO Settings > Items tab, has to be set to Inventory. The items also have to be Inventory in QBO. You can find your items list in QBO by tapping on the cogwheel in the far right corner > Products and Services.