Factuarea API
Pro-forma invoices

Duplicate a proforma

Create a new draft proforma by copying lines, client, and metadata from an existing proforma.

POST
/proformas/{proforma}/duplicate

Authorization

AuthorizationBearer <token>

In: header

Path Parameters

proforma*string

Header Parameters

Idempotency-Key?string

Unique key generated by the client to ensure idempotency on retries. It lets you safely resend the same request: the first response is cached and returned without re-executing the mutation. It is an opaque string to the server; any unique value of up to 64 characters is valid (UUID v7, UUID v4, ULID, nanoid, etc.). UUID v7 is recommended for consistency with the API identifiers. The same key reused with a different body returns 409 idempotency_key_reused.

Length1 <= length <= 64

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

application/json

import { Factuarea } from "@factuarea/sdk";const factuarea = new Factuarea({ apiKey: process.env.FACTUAREA_API_KEY! });const result = await factuarea.proformas.duplicate("01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01");
{
  "data": {
    "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a05",
    "object": "proforma",
    "number": "PRO-2026-00007",
    "series": {
      "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a0e",
      "code": "F-2026"
    },
    "client": {
      "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01",
      "name": "Acme Corporation"
    },
    "status": "draft",
    "issued_on": "2026-01-22",
    "valid_until": "2026-02-21",
    "validity_days": 30,
    "reference": "REF-API-2026-001",
    "converted_to_id": null,
    "converted_invoice_number": "F-2025-003",
    "subtotal": 1500,
    "taxes_total": 315,
    "total_vat": 315,
    "total_retention": 0,
    "total_surcharge": 0,
    "total": 1815,
    "shipping_cost": 15.5,
    "total_with_shipping": 1830.5,
    "currency": "EUR",
    "payment_method": "bank_transfer",
    "payment_terms_days": 30,
    "delivery_terms": "Entrega en 5 dias habiles, portes incluidos",
    "estimated_delivery_date": "2026-06-10",
    "notes": "Proforma pendiente de validación.",
    "terms_and_conditions": "Validez 30 dias. Proforma sin valor fiscal hasta su conversion en factura.",
    "external_id": "ERP-PRO-2026-0007",
    "lines": [
      {
        "object": "proforma_line",
        "description": "Setup inicial",
        "product": {
          "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a09",
          "name": "Consultoría hora estándar"
        },
        "quantity": 1,
        "unit_price": 1500,
        "tax_rate": 21,
        "retention_rate": 0,
        "surcharge_rate": 0,
        "discount_percent": 0,
        "subtotal": 1500,
        "taxes": 315,
        "total": 1815
      }
    ],
    "metadata": {
      "erp_code": "IVA-GEN",
      "ledger_account": "477000"
    },
    "tags": [
      "exportacion",
      "pendiente-validar"
    ],
    "custom_fields": [
      {
        "field": "incoterm",
        "value": "EXW"
      }
    ],
    "link_expires_at": "2026-07-01T09:53:23+02:00",
    "link_is_active": true,
    "created_at": "2026-01-22T09:10:00Z",
    "updated_at": "2026-01-22T09:10:00Z"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "missing_api_key",
    "message": "No se ha proporcionado una API key válida en el header Authorization.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#missing_api_key",
    "request_id": "req_01HKQS5N8VR7QXJ9K3T6BWPMZA"
  }
}

{
  "error": {
    "type": "authorization_error",
    "code": "insufficient_scope",
    "message": "Esta API key no tiene el scope requerido para esta operación.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#insufficient_scope",
    "request_id": "req_01HKQS5NBC3P8M1KX4V7SLNHQD"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "resource_not_found",
    "message": "El recurso solicitado no existe o pertenece a otra empresa.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#resource_not_found",
    "request_id": "req_01HKQS5NEQ6X1R4N9B0C5DWTPG"
  }
}

{
  "error": {
    "type": "idempotency_error",
    "code": "idempotency_key_reused",
    "message": "La cabecera `Idempotency-Key` ya se usó con un body distinto. Usa una clave nueva o reenvía exactamente el mismo body.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#idempotency_key_reused",
    "request_id": "req_01HKQS5NHT9A4U7R2E3F8GZWTJ"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limit_exceeded",
    "message": "Has excedido el rate limit de 60 peticiones por minuto. Reintenta tras 30 segundos.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#rate_limit_exceeded",
    "request_id": "req_01HKQS5NKW1C6W9T4G5H0JBZVL"
  }
}

{
  "error": {
    "type": "api_error",
    "code": "internal_error",
    "message": "Ha ocurrido un error inesperado. Si persiste, contacta con soporte adjuntando el request_id.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#internal_error",
    "request_id": "req_01HKQS5NLX2D7X0U5H6J1KCAWM"
  }
}
DEL

Delete a proforma

Delete a proforma. Returns 422 if the proforma has been converted to an invoice.

POST

Find a proforma by external ID

Look up a single proforma by its `external_id` (sent in the JSON body), the integration key that maps it to a record in a third-party system (ERP/CRM/e-commerce). Returns the matching proforma or 404 `proforma_not_found` if no proforma uses that external_id within your company.