> ## Documentation Index > Fetch the complete documentation index at: https://help.lobyco.com/llms.txt > Use this file to discover all available pages before exploring further. # Calculate the discounts for a specified purchase ## OpenAPI ````yaml openapi/pos-discount-v1.json POST /v1/discounted-purchases openapi: 3.0.4 info: title: Discount API 1.0 version: '1.0' servers: - url: https://{host}/pos-discount description: Your Lobyco environment variables: host: default: your-environment.lobyco.net description: >- The API host for your Lobyco environment. Replace it with the host you were given — this placeholder does not resolve. security: [] paths: /v1/discounted-purchases: post: tags: - Service2Service summary: Calculate the discounts for a specified purchase operationId: POST Discount/CalculatePurchaseDiscounts parameters: - name: offerTypes in: query description: List of Offer types to consider during discount calculation schema: type: array items: type: string - name: excludedOfferTypes in: query description: List of Offer types to exclude during discount calculation schema: type: array items: type: string - name: skipReservation in: query description: >- When set tot true, coupons that granted discount/bonus will not be reserved schema: type: boolean - name: preserveExternalDiscounts in: query description: >- When set, controls whether external discounts are preserved in the response, overriding the PreserveExternalDiscounts feature flag schema: type: boolean - name: usePurchaseDateTime in: query description: >- If true, discount evaluation (including coupon eligibility) is performed using the request's PurchaseDateTimeUtc, retrieving only the coupons that were valid at that historical purchase time. If false, the current server time is used and only coupons valid "now" are considered. schema: type: boolean default: false requestBody: description: The specified purchase that the discounts need to be calculated for. content: application/json: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadRequest examples: Purchase discounts: value: receiptId: fb7eb632-886f-4a5b-92c8-c63943006cf2 storeId: '475' memberId: '12396909' currencyCode: DKK totalAmount: 650 totalTaxAmount: 0 purchaseDateTimeUtc: '0001-01-01T00:00:00' purchaseBusinessDateTime: '0001-01-01T00:00:00' paymentMethods: [] products: - id: d3ca42d7-b7ab-4c18-8293-1d39008a4e40 sequenceNumber: 1 categoryId: '1' quantity: unitOfMeasure: pcs value: 2 originalPrice: 200 price: 200 - id: fd324399-ef53-4cba-8172-f855539e7a71 sequenceNumber: 2 categoryId: '1' quantity: unitOfMeasure: pcs value: 3 originalPrice: 450 price: 450 discounts: [] taxes: [] text/json: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadRequest examples: Purchase discounts: value: receiptId: fb7eb632-886f-4a5b-92c8-c63943006cf2 storeId: '475' memberId: '12396909' currencyCode: DKK totalAmount: 650 totalTaxAmount: 0 purchaseDateTimeUtc: '0001-01-01T00:00:00' purchaseBusinessDateTime: '0001-01-01T00:00:00' paymentMethods: [] products: - id: d3ca42d7-b7ab-4c18-8293-1d39008a4e40 sequenceNumber: 1 categoryId: '1' quantity: unitOfMeasure: pcs value: 2 originalPrice: 200 price: 200 - id: fd324399-ef53-4cba-8172-f855539e7a71 sequenceNumber: 2 categoryId: '1' quantity: unitOfMeasure: pcs value: 3 originalPrice: 450 price: 450 discounts: [] taxes: [] application/*+json: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadRequest examples: Purchase discounts: value: receiptId: fb7eb632-886f-4a5b-92c8-c63943006cf2 storeId: '475' memberId: '12396909' currencyCode: DKK totalAmount: 650 totalTaxAmount: 0 purchaseDateTimeUtc: '0001-01-01T00:00:00' purchaseBusinessDateTime: '0001-01-01T00:00:00' paymentMethods: [] products: - id: d3ca42d7-b7ab-4c18-8293-1d39008a4e40 sequenceNumber: 1 categoryId: '1' quantity: unitOfMeasure: pcs value: 2 originalPrice: 200 price: 200 - id: fd324399-ef53-4cba-8172-f855539e7a71 sequenceNumber: 2 categoryId: '1' quantity: unitOfMeasure: pcs value: 3 originalPrice: 450 price: 450 discounts: [] taxes: [] responses: '200': description: OK content: text/plain: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadResponse application/json: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadResponse text/json: schema: $ref: >- #/components/schemas/PurchaseLoad.Contract.Models.PurchaseLoadResponse components: schemas: PurchaseLoad.Contract.Models.PurchaseLoadRequest: required: - currencyCode - products - purchaseBusinessDateTime - purchaseDateTimeUtc - receiptId - storeId - totalAmount - totalTaxAmount type: object properties: receiptId: minLength: 1 type: string storeId: minLength: 1 type: string memberId: type: string nullable: true externalDiscountCardId: type: string nullable: true loyaltyCardId: type: string nullable: true orderId: type: string nullable: true currencyCode: maxLength: 3 minLength: 3 type: string totalAmount: type: number format: double amountForBonusCalculation: type: number format: double nullable: true totalTaxAmount: type: number format: double purchaseDateTimeUtc: type: string format: date-time purchaseBusinessDateTime: type: string format: date-time paymentMethods: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.PaymentMethod' nullable: true products: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Product' discounts: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Discount' nullable: true taxes: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Tax' nullable: true shipping: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.ShippingInfo' paymentLocation: type: string nullable: true checkoutType: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.CheckoutType' metadata: type: object additionalProperties: nullable: true nullable: true posId: type: string nullable: true phone: type: string nullable: true additionalProperties: false PurchaseLoad.Contract.Models.PurchaseLoadResponse: required: - currencyCode - products - purchaseBusinessDateTime - purchaseDateTimeUtc - receiptId - storeId - totalAmount - totalTaxAmount type: object properties: receiptId: minLength: 1 type: string storeId: minLength: 1 type: string memberId: type: string nullable: true externalDiscountCardId: type: string nullable: true loyaltyCardId: type: string nullable: true currencyCode: maxLength: 3 minLength: 3 type: string totalAmount: type: number format: double amountForBonusCalculation: type: number format: double nullable: true totalTaxAmount: type: number format: double purchaseDateTimeUtc: type: string format: date-time purchaseBusinessDateTime: type: string format: date-time paymentMethods: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.PaymentMethod' nullable: true products: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Product' discounts: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Discount' nullable: true taxes: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Tax' nullable: true shipping: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.ShippingInfo' paymentLocation: type: string nullable: true metadata: type: object additionalProperties: nullable: true nullable: true posId: type: string nullable: true phone: type: string nullable: true additionalProperties: false PurchaseLoad.Contract.Common.PaymentMethod: type: object properties: amount: type: number format: double currencyCode: type: string nullable: true conversionRate: type: number format: double nullable: true paymentType: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.PaymentType' cardPan: type: string nullable: true rounding: type: number format: double nullable: true displayName: type: string nullable: true metadata: type: object additionalProperties: nullable: true nullable: true additionalProperties: false PurchaseLoad.Contract.Common.Product: type: object properties: id: type: string nullable: true sequenceNumber: type: integer format: int32 name: type: string nullable: true categoryId: type: string nullable: true originalReceiptId: type: string nullable: true disposalItem: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.DisposalItem' unitPrice: type: number format: double nullable: true quantity: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Quantity' originalPrice: type: number format: double price: type: number format: double isReturned: type: boolean nullable: true isCancelled: type: boolean nullable: true taxIncludedInPrice: type: boolean nullable: true taxes: type: array items: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Tax' nullable: true metadata: type: object additionalProperties: nullable: true nullable: true discountAllocations: type: array items: $ref: >- #/components/schemas/PurchaseLoad.Contract.Common.DiscountAllocation nullable: true additionalProperties: false PurchaseLoad.Contract.Common.Discount: type: object properties: sequenceNumber: type: integer format: int32 nullable: true name: type: string nullable: true totalDiscountAmount: type: number format: double couponId: type: string nullable: true deprecated: true couponIds: type: array items: type: string nullable: true appliedProducts: type: array items: type: integer format: int32 nullable: true metadata: type: object additionalProperties: nullable: true nullable: true additionalProperties: false PurchaseLoad.Contract.Common.Tax: type: object properties: type: type: string nullable: true taxableAmount: type: number format: double nullable: true amount: type: number format: double percentage: type: number format: double nullable: true additionalProperties: false PurchaseLoad.Contract.Common.ShippingInfo: type: object properties: refundAsBonus: type: boolean totalAmount: type: number format: double additionalProperties: false PurchaseLoad.Contract.Common.CheckoutType: enum: - Pos - SelfCheckout - ScanAndPay - Online type: string PurchaseLoad.Contract.Common.PaymentType: enum: - Card - Cash - LoyaltyApp - Other type: string PurchaseLoad.Contract.Common.DisposalItem: type: object properties: name: type: string nullable: true unitPrice: type: number format: double quantity: $ref: '#/components/schemas/PurchaseLoad.Contract.Common.Quantity' totalAmount: type: number format: double additionalProperties: false PurchaseLoad.Contract.Common.Quantity: type: object properties: unitOfMeasure: type: string nullable: true value: type: number format: double additionalProperties: false PurchaseLoad.Contract.Common.DiscountAllocation: type: object properties: discountSequenceNumber: type: integer format: int32 discountAmount: type: number format: double additionalProperties: false ````