How do you post Vendor bill variances for non inventory item

https://netsuite.custhelp.com/app/answers/detail/a_id/93600/kw/vendor%20bill%20variance%20non-inventory "User creates a Purchase Order for a Non-Inventory Item, receives it, and bill it with a different Rate. This is not posting on the Post Vendor Bill Variances page. Only inventory items that has variance will reflect on the Post Vendor Bill Variances page. Non-Inventory items will not be reflected."