--- title: "ProductDemandCost" slug: "common-apidatatype-productdemandcost" updated: 2026-09-17T09:25:03Z published: 2026-09-17T09:25:03Z canonical: "api.ncloud-docs.com/common-apidatatype-productdemandcost" --- > ## 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. # ProductDemandCost Available in Classic and VPC This is a product billing expense. ## 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 CommonCode payCurrency; private Double thisMonthAppliedExchangeRate; ``` ## 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` | Long | Required | Contract discount amount | | `promotionDiscountAmount` | Long | Required | Promotion discount amount | | `etcDiscountAmount` | Long | Required | Other discount amount | | `productDiscountAmount` | Long | Required | Product discount amount | | `creditDiscountAmount` | Long | Required | Credit discount amount | | `defaultAmount` | Long | Required | Cancellation fee | | `useAmount` | Long | Required | Usage fee amount | | `demandAmount` | Long | Required | Billing amount | | `writeDate` | Date | Required | Creation date and time (YYYY-MM-DDThh:mm:ssZ) | | `memberPriceDiscountAmount` | Long | Required | Membership pricing plan discount amount | | `memberPromiseDiscountAddAmount` | Long | Required | Membership contract pricing plan discount amount | | `payCurrency` | [CommonCode](/docs/en/common-vapidatatype-commoncode) | Required | Payment currency | | `thisMonthAppliedExchangeRate` | Double | Required | Applicable exchange rate for this month |