| 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. |