> ## Documentation Index > Fetch the complete documentation index at: https://docs.devmob.app.br/llms.txt > Use this file to discover all available pages before exploring further. # Preview Checkout Session > Previews a checkout session from a QR token. ## OpenAPI ````yaml /api-reference/customer/openapi.json post /api/v1/customer/checkout-sessions/preview openapi: 3.0.0 info: title: OABUS Customer API description: OABUS API version: '1.0' contact: {} servers: [] security: [] tags: [] paths: /api/v1/customer/checkout-sessions/preview: post: tags: - CheckoutSession summary: Preview Checkout Session description: Previews a checkout session from a QR token. operationId: previewCheckoutSession parameters: - name: fields required: false in: query description: >- Comma-separated list of fields to include in the response. Supports dot notation for nested projection (e.g. `id,name,user.email,trips.route.id`). Unknown fields are silently dropped. schema: type: string requestBody: $ref: '#/components/requestBodies/PreviewCheckoutSessionRequestBody' responses: '200': $ref: '#/components/responses/PreviewCheckoutSession200Response' '400': $ref: '#/components/responses/PreviewCheckoutSession400Response' '401': $ref: '#/components/responses/PreviewCheckoutSession401Response' '500': $ref: '#/components/responses/PreviewCheckoutSession500Response' security: - bearer: [] components: requestBodies: PreviewCheckoutSessionRequestBody: required: true content: application/json: schema: type: object properties: qrToken: description: Raw QR token returned only on creation example: nL7m2oM5zMwdON44BpQ_WteULcSGMjQm53WJb5xVZC8 nullable: true type: string responses: PreviewCheckoutSession200Response: content: application/json: schema: type: object properties: checkoutSessionId: type: string format: uuid description: Checkout session identifier example: 01981255-3c7a-7bd4-bb5f-8b47bc4dce91 status: type: string enum: - CREATED - LINKED - PREPARED - CONFIRMED - EXPIRED - CANCELED description: Computed checkout session status example: CREATED paymentMethod: type: string enum: - CASH - CREDIT_GRANT description: Checkout payment method example: CASH expiresAt: type: string format: date-time description: Expiration date example: '2026-07-08T12:15:00.000Z' trip: type: object properties: tripId: type: string format: uuid description: Trip identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a status: type: string enum: - SCHEDULED - IN_PROGRESS - COMPLETED - CANCELLED description: Trip status example: SCHEDULED departureAt: type: string format: date-time description: Departure time example: '2026-04-15T08:00:00.000Z' estimatedArrivalAt: type: string format: date-time description: Estimated arrival time example: '2026-04-15T14:00:00.000Z' itineraries: type: array items: type: object properties: tripItineraryId: type: string format: uuid description: Trip itinerary identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a tripId: type: string format: uuid description: Trip identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3b price: type: integer description: Price in centavos example: 15000 fromStop: type: object properties: tripStopId: type: string format: uuid description: Trip stop identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a stopOrder: type: integer description: Stop sequence order example: 1 point: type: object properties: description: description: Additional description example: Terminal Rodoviário Tietê nullable: true type: string lat: description: Latitude example: -23.5155 nullable: true type: number minimum: -90 maximum: 90 lng: description: Longitude example: -46.6254 nullable: true type: number minimum: -180 maximum: 180 name: type: string description: Point name example: São Paulo pointId: type: string format: uuid description: Point identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a required: - name - pointId additionalProperties: false description: Stop point required: - tripStopId - stopOrder - point additionalProperties: false description: Origin stop toStop: type: object properties: tripStopId: type: string format: uuid description: Trip stop identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a stopOrder: type: integer description: Stop sequence order example: 1 point: type: object properties: description: description: Additional description example: Terminal Rodoviário Tietê nullable: true type: string lat: description: Latitude example: -23.5155 nullable: true type: number minimum: -90 maximum: 90 lng: description: Longitude example: -46.6254 nullable: true type: number minimum: -180 maximum: 180 name: type: string description: Point name example: São Paulo pointId: type: string format: uuid description: Point identifier example: 0195e7a1-8b5c-7d3e-9f4a-2c6b8d0e1f3a required: - name - pointId additionalProperties: false description: Stop point required: - tripStopId - stopOrder - point additionalProperties: false description: Destination stop required: - tripItineraryId - tripId - price - fromStop - toStop additionalProperties: false description: Trip itineraries required: - tripId - status - departureAt - estimatedArrivalAt - itineraries additionalProperties: false description: Session trip required: - checkoutSessionId - status - paymentMethod - expiresAt - trip additionalProperties: false description: OK PreviewCheckoutSession400Response: content: application/json: example: errors: - message: required path: name message: Bad Request Error statusCode: 400 schema: properties: message: type: string statusCode: enum: - 400 type: number errors: items: properties: message: type: string path: type: string required: - message - path type: object type: array required: - message - statusCode type: object description: Bad Request Error PreviewCheckoutSession401Response: content: application/json: example: message: Missing or invalid access token statusCode: 401 schema: properties: message: type: string statusCode: enum: - 401 type: number required: - message - statusCode type: object description: Unauthorized PreviewCheckoutSession500Response: content: application/json: example: message: Internal Server Error statusCode: 500 schema: properties: message: type: string statusCode: enum: - 500 type: number required: - message - statusCode type: object description: Internal Server Error securitySchemes: bearer: scheme: bearer bearerFormat: JWT type: http ````