QuickBooks Online Syn Error : Type field is required for Item CREATE/UPDATE requests for Minor Version 4 or above.
Why the Sync Error occurs
This error occurs because QuickBooks Online supports only three (3) Item types: Inventory, Non-inventory, and Service. Item of any other type will trigger this sync error.
How to Fix the Sync Error
Update the Item type to Inventory, Non-inventory, or Service Sync
To avoid this error in the future, create Items of type Inventory, Non-inventory or Service only.