This currency of this order item. Required when amount is present.
Human-readable description for this order item.
The ID of the associated object for this line item. Expandable if not null (e.g., expandable to a SKU).
OptionalquantityThe quantity of this order item. When type is sku, this is the number of instances of the SKU to be ordered.
The type of this order item. Must be sku, tax, or shipping.
The amount (price) for this order item.