Auspost wont ship international - saying Tariff is incorrect

If you are posting an item International and the App gives the error "

HS Tariff Code for destination country US must be 10 numeric characters:: shipment [0}.items_contents[0]. tariff_code"

and you know the tariff code is correct, please check your settings under Extra Option in the order.

This section has 2 fields

*Has commercial value

*Non Delivery Action

These 2 fields need to have the correct data inputted.

If “Has Commercial Value” = "true" then “Non Delivery Action” must be = “return”

If you need return as the Non Delivery Action make sure has commercial value is set to true.

If Non Delivery Action is Abandoned make sure has commercial value is set to false.