> ## 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. # Create sale (DTE) > Issues a sales document. The external system must send the tax breakdowns and calculated totals. The control number uses the point of sale of the sale's cash shift, or `point_of_sale_id`, or the branch default. A `point_of_sale_id` from another branch or an inactive one returns 422 and the sale is not transmitted. **Required permission:** `sales` ## OpenAPI ````yaml /api-reference/openapi.en.json post /sales 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: /sales: post: tags: - Billing · Sales summary: Create sale (DTE) description: >- Issues a sales document. The external system must send the tax breakdowns and calculated totals. The control number uses the point of sale of the sale's cash shift, or `point_of_sale_id`, or the branch default. A `point_of_sale_id` from another branch or an inactive one returns 422 and the sale is not transmitted. **Required permission:** `sales` requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SaleRequest' example: branch_id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 customer_id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 document_type: fc date: '2026-10-01T10:00:00' observation: Entrega en bodega central is_credit: false credit_days: 0 payment_details: - code: '01' payment_method: Efectivo amount: 22.6 reference: '' products: - id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 sku: PRD-001 name: Producto A quantity: 2 price_before_taxes: 10 sale_not_suject: 0 sale_exent: 0 sale_taxed: 20 subtotal: 20 discount: 0 type: phisical totals: netTotals: 20 saleTotalNotSuject: 0 saleTotalExent: 0 saleTotalTax: 20 totalTax: 2.6 totalRetein: 0 totalRent: 0 freight: 0 insurance: 0 saleTotalToPayment: 22.6 responses: '200': description: Document issued content: application/json: example: status: true message: Invoice created successfully data: sale_id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 generation_code: 6F1E2D3C-8A4B-4C5D-9E6F-0A1B2C3D4E5F control_number: DTE-01-M001P001-000000000000001 status: processed issue_time: '2026-10-01 10:30:00' stamp: 2026A1B2C3D4E5F6 point_of_sale_id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 establishment_code: M001 point_of_sale_code: P001 total: 22.6 '401': $ref: '#/components/responses/E401' '403': $ref: '#/components/responses/E403' '404': $ref: '#/components/responses/E404' '422': $ref: '#/components/responses/E422' '429': $ref: '#/components/responses/E429' '500': $ref: '#/components/responses/E500' components: schemas: SaleRequest: type: object properties: branch_id: type: string format: uuid description: Issuing branch (GET /branches). customer_id: type: string format: uuid description: Receiving customer. document_type: type: string description: 'SV: fc, ccf, fex, nc, nd, nr. US: inv, cm, dm.' enum: - fc - ccf - fex - nc - nd - nr - inv - cm - dm date: type: string description: 'ISO 8601 date and time. Default: now.' observation: type: string description: Notes. is_credit: type: boolean description: Credit sale. credit_days: type: integer description: Credit days. project_id: type: string format: uuid description: Associated project. point_of_sale_id: type: string format: uuid description: >- Issuing point of sale (of the branch and active). Default: the branch's default. cost_center_id: type: string format: uuid description: >- Cost center of the sale (leaf and active; GET /accounting/cost-centers). Applied to income lines when posting. incoterm_id: type: string format: uuid description: Incoterm (export). payment_details: type: array items: type: object properties: code: type: string description: Payment method code (GET /payment-methods). payment_method: type: string description: Name. amount: type: number description: Amount. reference: type: string description: Reference. required: - amount products: type: array items: type: object properties: id: type: string format: uuid description: Product in FileXpress (deducts inventory). sku: type: string description: Code. name: type: string description: Description. quantity: type: number description: Quantity. price_before_taxes: type: number description: Unit price before taxes. sale_not_suject: type: number description: Not subject. sale_exent: type: number description: Exempt. sale_taxed: type: number description: Taxable. subtotal: type: number description: Subtotal before taxes. discount: type: number description: Discount. type: type: string description: Good or service. enum: - phisical - service cost_center_id: type: string format: uuid description: Cost center of the line; if missing, that of the sale. cost_center_distribution_id: type: string format: uuid nullable: true description: >- Distribution of the line; if the line has neither a center nor a distribution, the sale's is used. Mutually exclusive with `cost_center_id` at the same level (422 `Indique centro de costo o distribución, no ambos.`). required: - name - quantity - price_before_taxes - subtotal totals: type: object properties: netTotals: type: number description: netTotals saleTotalNotSuject: type: number description: saleTotalNotSuject saleTotalExent: type: number description: saleTotalExent saleTotalTax: type: number description: saleTotalTax totalTax: type: number description: totalTax totalRetein: type: number description: totalRetein totalRent: type: number description: totalRent freight: type: number description: freight insurance: type: number description: insurance saleTotalToPayment: type: number description: saleTotalToPayment cost_center_distribution_id: type: string format: uuid nullable: true description: >- Active distribution (GET /accounting/cost-center-distributions): income is split among its centers by percentage. Mutually exclusive with `cost_center_id` at the same level (422 `Indique centro de costo o distribución, no ambos.`). required: - branch_id - customer_id - document_type - products - payment_details - totals 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. E422: description: Validation error content: application/json: example: status: false message: Validation errors errors: start_date: - The start date field is required. E429: description: Rate limit exceeded content: application/json: example: status: false message: Rate limit exceeded. Please try again later. rate_limit: 100 E500: description: Internal error content: application/json: example: status: false message: An error occurred while creating the invoice securitySchemes: ApiKey: type: apiKey in: header name: X-API-Key description: Integration API Key (Integrations → New Integration). ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.