--- title: "ProductDemandCostByDiscount" slug: "common-apidatatype-productdemandcostbydiscount" updated: 2026-09-17T09:25:03Z published: 2026-09-17T09:25:03Z canonical: "api.ncloud-docs.com/common-apidatatype-productdemandcostbydiscount" --- > ## Documentation Index > Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # ProductDemandCostByDiscount Available in Classic and VPC This is a product billing expense that reflect the discount amount. ## Syntax The syntax is as follows. ``` private String memberNo; private String demandMonth; private ProductDemandType productDemandType; private Double promiseDiscountAmount; private Double promotionDiscountAmount; private Double etcDiscountAmount; private Double productDiscountAmount; private Double creditDiscountAmount; private Double defaultAmount; private Double useAmount; private Double demandAmount; private Date writeDate; private Double memberPriceDiscountAmount; private Double memberPromiseDiscountAddAmount; private Integer discountAppliedCount; private ArrayList appliedCreditHistoryList; private ArrayList appliedProductDiscountHistoryList; private CommonCode payCurrency; ``` ## Field The following describes the fields. | Field | Type | Required | Description | | --- | --- | --- | --- | | `memberNo` | String | Required | Member number | | `demandMonth` | String | Required | Billing month | | `productDemandType` | [ProductDemandType](/docs/en/common-vapidatatype-ProductDemandType) | Required | Product billing type | | `promiseDiscountAmount` | Double | Required | Contract discount amount | | `promotionDiscountAmount` | Double | Required | Promotion discount amount | | `etcDiscountAmount` | Double | Required | Other discount amount | | `productDiscountAmount` | Double | Required | Product discount amount | | `creditDiscountAmount` | Double | Required | Credit discount amount | | `defaultAmount` | Double | Required | Cancellation fee | | `useAmount` | Double | Required | Usage fee amount | | `demandAmount` | Double | Required | Billing amount | | `writeDate` | Date | Required | Creation date and time (YYYY-MM-DDThh:mm:ssZ) | | `memberPriceDiscountAmount` | Double | Required | Membership pricing plan discount amount | | `memberPromiseDiscountAddAmount` | Double | Required | Membership contract pricing plan discount amount | | `discountAppliedCount` | Integer | Required | Number of product discounts applied to the product in the current month | | `appliedCreditHistoryList` | List<[AppliedCreditHistory](/docs/en/common-vapidatatype-appliedcredithistory)> | Required | List of applied credit history | | `appliedProductDiscountHistoryList` | List<[AppliedProductDiscountHistory](/docs/en/common-vapidatatype-appliedproductdiscounthistory)> | Required | List of applied product discount history | | `payCurrency` | [CommonCode](/docs/en/common-vapidatatype-commoncode) | Required | Payment currency |