Adds a discount to an existing checkout.
This discount only applies to
line_items. When you call this API, you clear out all existing discounts applied to line items, including product and order-based discounts.
This endpoint splits the discount between line items based on the item value.
- X-Auth-Token in header - required
- store_hash in path - string
- checkoutId in path - string - required
ID of the checkout; the same as the cart ID.
- Accept in header with default of application/json - string - required
The MIME type of the response body.
- Content-Type in header with default of application/json - string - required
The MIME type of the request body.