Line item

Field	Type	Description
yotpo_product_id	long	Yotpo's unique ID for the product. This value is read-only.
external_product_id (required)	string	The merchant's unique ID for the product.
quantity (required)	integer	The quantity of the line item.
total_price	double	The total price of the line item.
subtotal_price	double	The price of the products after discounts but before shipping, taxes, and tips.
coupon_code	string	The coupon code that was used in the purchase. Max length: 255 characters Case sensitive
custom_properties	object	An array of custom property objects.