identifierstring - A string used to uniquely identify a discount offer for a product.
typenumber - The type of discount offer.
pricenumber - The discount price of the product in the local currency.
priceLocalestring - The locale used to format the discount price of the product.
paymentModestring - The payment mode for this product discount. Can be
numberOfPeriodsnumber - An integer that indicates the number of periods the product discount is available.
subscriptionPeriodProductSubscriptionPeriod (optional) - An object that defines the period for the product discount.