We're creating a scheduled task which will import and create Sales Orders in Zoho Inventory. 

We're struggling to get VAT to show on the orders which are being created. I've set up the line items fields as follows:

"line_items":  [

      {

            "name":"some_product"

            ,"rate":"100"

            ,"quantity":"1"

            ,"tax_type":"tax"

            ,"tax_name":"Standard Rate"

            ,"tax_percentage":"20"

      }

]

The order is created fine, with the correct products, quantities and value, but VAT is not showing up on the order. I think I've set this up as suggested in the API spec - am I missing a field?