Level3LineItem
- productType: string
_code max length:12requiredMerchant-defined product code.
- productType: string
_description max length:35requiredDescription of the item.
- quantityType: numbermin:0required
Quantity purchased. Rounded to at most 4 decimals.
- taxType: integer
_amount min:0requiredValue-added tax on the item, in the currency's smallest unit.
- unitType: integer
_amount min:0requiredPrice per unit, in the currency's smallest unit.