Add Checkout Item
Adds a product or other item to the checkout of the current shopper.
Body
All properties of the new item. Required property: Product.ProductCode.
A single line item of an order.
Product-level handling fee for this item (e.g. special packaging, hazmat fees). This does NOT include order-level handling fees — those are in Mozu.CommerceRuntime.Contracts.Commerce.CommerceItem.WeightedOrderHandlingFee. Total handling on the shipment = HandlingAmount + WeightedOrderHandlingFee.
Order-level handling fee allocated to this item (e.g. flat handling fee spread across all items). This is separate from product-level handling in Mozu.CommerceRuntime.Contracts.Commerce.CommerceItem.HandlingAmount. Total handling on the shipment = HandlingAmount + WeightedOrderHandlingFee.
Response
OK
Payment transaction associated with this checkout. It is the entire payment interchange between the merchant who is forwarding the customer's payment information and the payment service who is authorizing and capturing payment. Payment can be either by credit card, check, or PayPal.

