> ## Documentation Index
> Fetch the complete documentation index at: https://docs.filexpress.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Get purchase

> Status and detail of a purchase.

**Required permission:** `expenses`



## OpenAPI

````yaml /api-reference/openapi.en.json get /expenses/{id}
openapi: 3.0.3
info:
  title: FileXpress External API
  version: 1.0.0
  description: >-
    API for integrating third-party systems with FileXpress: billing, HR,
    accounting, inventory, projects, accounts receivable and payable, treasury,
    pricing and promotions, and cash. Current base URL: /api/external/v1. The
    legacy unversioned path (/api/external) will be removed on January 1, 2027;
    migrate to /api/external/v1 (same endpoints, only the base URL changes). The
    v2 API (/api/external/v2) exposes currencies and exchange rates, sales and
    purchases in foreign currency, taxes by id, payrolls with branch, and errors
    with a stable `code`; its operations carry the /v2 prefix in the path. We
    suggest migrating to the available v2 routes before March 30, 2027.
servers:
  - url: https://api.filexpress.app/api/external/v1
    description: Production
security:
  - ApiKey: []
tags:
  - name: General
  - name: Billing · Sales
  - name: Billing · Purchases
  - name: Billing · Customers
  - name: Billing · Suppliers
  - name: Billing · Products
  - name: Catalogs
  - name: HR · Employees
  - name: HR · Attendance
  - name: HR · Labor rules
  - name: HR · Schedules
  - name: HR · Holidays
  - name: HR · Attendance results
  - name: HR · Leave requests
  - name: HR · Payrolls
  - name: Accounting
  - name: Inventory
  - name: Projects
  - name: Accounts receivable
  - name: Accounts payable
  - name: Treasury
  - name: Pricing and promotions
  - name: Cash
  - name: Points of sale
  - name: API v2 · General
  - name: API v2 · Currencies and rates
  - name: API v2 · Countries
  - name: API v2 · Sales
  - name: API v2 · Purchases
  - name: API v2 · Payrolls
paths:
  /expenses/{id}:
    get:
      tags:
        - Billing · Purchases
      summary: Get purchase
      description: |-
        Status and detail of a purchase.

        **Required permission:** `expenses`
      parameters:
        - name: id
          in: path
          required: true
          description: Purchase ID
          schema:
            type: string
            format: uuid
          example: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11
      responses:
        '200':
          description: Success
          content:
            application/json:
              example:
                status: true
                data:
                  expense_id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11
                  generation_code: A1B2C3D4-...
                  control_number: DTE-03-...
                  document_type: ccf
                  status: processed
                  issue_time: '2026-10-01 10:00:00'
                  payment_status: pending
                  is_credit: true
                  provider:
                    id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11
                    legal_name: Distribuidora XYZ S.A. de C.V.
                    provider_name: Distribuidora XYZ
                  totals:
                    expense_total: 45.2
                    expense_to_payment: 45.2
                  products:
                    - sku: INS-001
                      name: Insumo A
                      quantity: 5
                      individual_price: 8
                      subtotal: 40
        '401':
          $ref: '#/components/responses/E401'
        '403':
          $ref: '#/components/responses/E403'
        '404':
          $ref: '#/components/responses/E404'
        '429':
          $ref: '#/components/responses/E429'
components:
  responses:
    E401:
      description: Missing or invalid API Key
      content:
        application/json:
          example:
            status: false
            message: Invalid API Key.
    E403:
      description: Integration without the required permission or deactivated
      content:
        application/json:
          example:
            status: false
            message: This integration does not have the 'hr.employees' permission.
            required_scope: hr.employees
    E404:
      description: Resource does not exist or belongs to another business
      content:
        application/json:
          example:
            status: false
            message: Not found.
    E429:
      description: Rate limit exceeded
      content:
        application/json:
          example:
            status: false
            message: Rate limit exceeded. Please try again later.
            rate_limit: 100
  securitySchemes:
    ApiKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: Integration API Key (Integrations → New Integration).

````

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