Factuarea API
Invoices

Duplicate an invoice

Create a new draft invoice by copying the lines, client, and metadata from an existing invoice. The new invoice gets a fresh `uuid` and number.

POST
/invoices/{invoice}/duplicate

Authorization

AuthorizationBearer <token>

In: header

Path Parameters

invoice*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

import { Factuarea } from "@factuarea/sdk";const factuarea = new Factuarea({ apiKey: process.env.FACTUAREA_API_KEY! });const result = await factuarea.invoices.duplicate("01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01");
{
  "data": {
    "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a42",
    "object": "invoice",
    "number": "FAC-2026-00042",
    "is_number_assigned": true,
    "type": "F1",
    "series": {
      "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8b02",
      "code": "FAC-2026"
    },
    "client": {
      "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01",
      "name": "Acme Soluciones SL"
    },
    "status": "paid",
    "issued_on": "2026-03-15",
    "due_on": "2026-04-14",
    "subtotal": 1000,
    "taxes_total": 210,
    "total": 1210,
    "currency": "EUR",
    "notes": "Servicios profesionales marzo 2026.",
    "external_id": "ERP-2026-0042",
    "lines": [
      {
        "object": "invoice_line",
        "description": "Consultoría técnica (10 h)",
        "product": {
          "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8b03",
          "name": "Consultoría técnica (hora)"
        },
        "quantity": 10,
        "unit_price": 100,
        "tax_rate": 21,
        "discount_percent": 0,
        "subtotal": 1000,
        "taxes": 210,
        "total": 1210
      }
    ],
    "metadata": {
      "order_id": "PO-2026-0042"
    },
    "tags": [
      "consultoria",
      "cliente-vip"
    ],
    "custom_fields": [
      {
        "field": "centro_coste",
        "value": "CC-2026-001"
      },
      {
        "field": "numero_pedido",
        "value": "PO-2026-0042"
      }
    ],
    "operation_regime": "general",
    "exclude_347": false,
    "verifactu_status": "accepted",
    "paid_amount": 1210,
    "pending_amount": 0,
    "payments": {
      "detail": [
        {
          "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a90",
          "object": "payment",
          "invoice_id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a42",
          "amount": 1210,
          "payment_date": "2026-03-20",
          "payment_method": "bank_transfer",
          "payment_method_text": "Transferencia bancaria",
          "reference": "TRF-2026-0042",
          "notes": null,
          "created_at": "2026-03-20T10:30:00Z",
          "updated_at": "2026-03-20T10:30:00Z"
        }
      ],
      "total": 1210,
      "pending": 0
    },
    "is_corrective": false,
    "corrective": null,
    "payment": {
      "method": "bank_transfer",
      "reference": "TRF-2026-0042",
      "date": "2026-03-20"
    },
    "public_link": {
      "object": "public_link",
      "url": "https://app.factuarea.com/d/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a42",
      "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a42",
      "enabled": true,
      "expires_at": "2026-09-15T23:59:59Z",
      "max_days": 120
    },
    "substituted_by": null,
    "recurring": null,
    "paid_at": "2026-03-20T10:30:00Z",
    "paid_on": "2026-03-20",
    "sent_at": "2026-03-15T11:45:00Z",
    "voided_at": null,
    "void_reason": null,
    "created_at": "2026-03-15T11:30:00Z",
    "updated_at": "2026-03-20T10:30:00Z"
  }
}

{
  "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": "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 an invoice

Delete a draft invoice. Issued invoices cannot be deleted (use `void` instead).

POST

Find an invoice by external ID

Look up a single invoice 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). Distinct from the fiscal number and the `uuid`. Returns the matching invoice or 404 `invoice_not_found` if no invoice uses that external_id within your company.