> ## Documentation Index > Fetch the complete documentation index at: https://docs.lapyme.com.ar/llms.txt > Use this file to discover all available pages before exploring further. # Descargar documento de compra > Revalida la API key, el scope purchases:read, la organización y la procedencia del documento. Responde 302 hacia una URL firmada de cinco minutos para el PDF o imagen original. Seguí el redirect y no persistas el Location. ## OpenAPI ````yaml /api-reference/openapi.json get /api/v1/purchases/{purchase_id}/document openapi: 3.1.0 info: title: La Pyme API description: >- Resources and workflows for purchases, sales, inventory, contacts, products, reports, and settings. version: 1.0.0 contact: name: La Pyme Support email: hola@lapyme.com.ar license: name: Proprietary url: https://lapyme.com.ar/terminos servers: - url: https://api.lapyme.com.ar description: Servidor de producción security: - bearerAuth: [] tags: - name: API description: Public API operations for La Pyme integrations. paths: /api/v1/purchases/{purchase_id}/document: get: tags: - API summary: Descargar documento de compra description: >- Revalida la API key, el scope purchases:read, la organización y la procedencia del documento. Responde 302 hacia una URL firmada de cinco minutos para el PDF o imagen original. Seguí el redirect y no persistas el Location. operationId: downloadApiPurchaseDocument parameters: - name: purchase_id in: path description: ID de la compra required: true schema: type: string format: uuid responses: '302': description: >- Authorized redirect to a short-lived signed storage URL. Clients should follow redirects immediately and must not persist the Location value. headers: Location: description: Short-lived signed URL for the document bytes. required: true schema: type: string format: uri Cache-Control: description: Always private, no-store. schema: type: string example: private, no-store X-Request-Id: description: Request identifier for support and tracing. schema: type: string example: req_document_1 Retry-After: description: Segundos a esperar antes de volver a intentar la solicitud. schema: type: string example: '30' X-RateLimit-Limit: description: Límite de la ventana activa. schema: type: string example: '5000' X-RateLimit-Remaining: description: Solicitudes restantes en la ventana activa. schema: type: string example: '0' X-RateLimit-Reset: description: Segundos restantes hasta el reset de la ventana activa. schema: type: string example: '30' RateLimit-Limit: description: Límite de la ventana activa en formato estándar. schema: type: string example: '5000' RateLimit-Remaining: description: Solicitudes restantes en la ventana activa en formato estándar. schema: type: string example: '0' RateLimit-Reset: description: >- Segundos hasta el reset de la ventana activa en formato estándar. schema: type: string example: '30' '400': description: ID de recurso inválido content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: INVALID_REQUEST value: request_id: req_error_1 error: type: invalid_request_error code: INVALID_REQUEST message: ID de recurso inválido retryable: false details: [] '401': description: API key faltante o inválida content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: INVALID_REQUEST value: request_id: req_error_1 error: type: invalid_request_error code: INVALID_REQUEST message: API key faltante o inválida retryable: false details: [] '403': description: Scopes insuficientes content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: INVALID_REQUEST value: request_id: req_error_1 error: type: invalid_request_error code: INVALID_REQUEST message: Scopes insuficientes retryable: false details: [] '404': description: Recurso o documento no encontrado content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: INVALID_REQUEST value: request_id: req_error_1 error: type: invalid_request_error code: INVALID_REQUEST message: Recurso o documento no encontrado retryable: false details: [] '429': description: Límite de solicitudes excedido para la organización headers: Retry-After: description: Segundos a esperar antes de volver a intentar la solicitud. schema: type: string example: '30' X-RateLimit-Limit: description: Límite de la ventana activa. schema: type: string example: '5000' X-RateLimit-Remaining: description: Solicitudes restantes en la ventana activa. schema: type: string example: '0' X-RateLimit-Reset: description: Segundos restantes hasta el reset de la ventana activa. schema: type: string example: '30' RateLimit-Limit: description: Límite de la ventana activa en formato estándar. schema: type: string example: '5000' RateLimit-Remaining: description: Solicitudes restantes en la ventana activa en formato estándar. schema: type: string example: '0' RateLimit-Reset: description: >- Segundos hasta el reset de la ventana activa en formato estándar. schema: type: string example: '30' content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: RATE_LIMITED value: request_id: req_rate_limit_1 error: type: rate_limit_error code: RATE_LIMITED message: >- The organization request limit was reached. Try again later. retryable: true details: [] '500': description: Error interno al validar la procedencia segura del documento content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: INVALID_REQUEST value: request_id: req_error_1 error: type: invalid_request_error code: INVALID_REQUEST message: >- Error interno al validar la procedencia segura del documento retryable: false details: [] '503': description: No se pudo firmar el documento temporalmente content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' examples: default: summary: RETRYABLE_DEPENDENCY_FAILURE value: request_id: req_document_1 error: code: RETRYABLE_DEPENDENCY_FAILURE message: Document storage is temporarily unavailable. retryable: true type: invalid_request_error details: [] x-codeSamples: - lang: typescript label: La Pyme SDK source: | import { Lapyme } from "lapyme"; const lapyme = new Lapyme({ bearerAuth: process.env["LAPYME_API_KEY"] ?? "", }); const response = await fetch( "https://api.lapyme.com.ar/api/v1/purchases/9c692e8b-0f9a-4f7c-8b99-061a2eb188ae/document", { headers: { Authorization: `Bearer ${process.env["LAPYME_API_KEY"]}` }, redirect: "follow", } ); if (!response.ok) throw new Error(await response.text()); const documentBytes = await response.arrayBuffer(); components: schemas: ApiErrorEnvelope: type: object properties: request_id: type: string error: type: object properties: type: type: string enum: - api_error - authentication_error - authorization_error - business_error - external_dependency_error - idempotency_error - invalid_request_error - rate_limit_error code: type: string message: type: string retryable: type: boolean details: type: array items: $ref: '#/components/schemas/ApiSharedObjectc671832641' required: - type - code - message - retryable - details additionalProperties: false required: - request_id - error additionalProperties: false ApiSharedObjectc671832641: type: object properties: code: type: string message: type: string field: type: string required: - code - message additionalProperties: false securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API Key description: Incluí tu API key en el header Authorization con el prefijo Bearer. ````