identifier string - A string used to uniquely identify a discount offer for a product.type number - The type of discount offer.price number - The discount price of the product in the local currency.priceLocale string - The locale used to format the discount price of the product.paymentMode string - The payment mode for this product discount. Can be payAsYouGo, payUpFront, or freeTrial.numberOfPeriods number - An integer that indicates the number of periods the product discount is available.subscriptionPeriod ProductSubscriptionPeriod (optional) - An object that defines the period for the product discount.