Discount code applications capture the intentions of a discount code at the time that it is applied onto an order.
Discount applications don't represent the actual final amount discounted on a line (line item or shipping line). The actual amount discounted on a line is represented by the DiscountAllocation object.
The method by which the discount's value is applied to its entitled items.
The string identifying the discount code that was used at the time of application.
An ordered index that can be used to identify the discount application and indicate the precedence of the discount application for calculations.
How the discount amount is distributed on the discounted lines.
Whether the discount is applied on line items or shipping lines.
The value of the discount application.