Accept a tax ID transfer

Accept a tax ID transfer with its secret: the tax ID moves to the account in the path.

Irreversible. - The body carries only secret; requires Idempotency-Key (else 422 idempotency_key_required). - Plan gates run first, e.g. 402 additional_nif_plan_required, 402 payment_method_required. - 422 nif_transfer_invalid for an unusable secret; 422 nif_transfer_expired.
Requires the nif_transfers:write scope, which * does not cover: the API key must list it explicitly.

Authorization

AuthorizationBearer <token>

Your API key as a bearer token: fact_live_… in production, fact_test_… in sandbox. See the authentication guide.

In: header

Path Parameters

account*string

Public identifier (UUID v7) of your account. Get it from GET /v1/me (data.account.id).

Formatuuid

Client-generated opaque key (up to 255 characters; UUID v7 recommended) that makes retries safe: the first response is cached and replayed for repeats without re-executing the mutation. Reusing a key with a different body returns 422 idempotency_key_reused; the values of secret fields (password, secret…) count as part of the body, so retrying with a corrected secret under the same key is a different request, never the replay of the earlier answer. See the Idempotency guide. Required on this operation: repeating it delivers an effect that cannot be taken back (an email sent, a file generated, a third-party call, a charge), so a request without this header is rejected with 422 idempotency_key_required before any business logic runs.

Length1 <= length <= 255

Factuarea-Version?string

Pin the API version (YYYY-MM-DD, Stripe-style date versioning) for this request; omit to use the key's pinned version, or the latest if none. Unsupported version → 400 unsupported_api_version; malformed → 400 parameter_invalid_format. The effective version is echoed in the Factuarea-Version response header. See the Versioning guide.

Formatdate

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

secret*string

Plaintext secret of the tax ID transfer, exactly as its issuance response returned it.

Length24 <= length <= 255

Response Body

`application/json`

Request example

const apiKey = process.env.FACTUAREA_API_KEY;if (!apiKey) throw new Error("Set FACTUAREA_API_KEY");const response = await fetch("https://api.factuarea.com/v1/accounts/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01/nif-transfers/accept", {  method: "POST",  headers: { Authorization: `Bearer ${apiKey}`, ...{"Accept":"application/json","Content-Type":"application/json","Idempotency-Key":"erp-2026-public-api-v1-account-nif_transfers-accept"} },  body: JSON.stringify({  "secret": "EJEMPLOdeTRASPASOnoVALIDOnoSIRVEparaACEPTARnada0"}),});if (!response.ok) throw new Error(await response.text());if (response.status !== 204) console.log(await response.json());

Response example

{
  "data": {
    "id": "0199a1f0-1c22-7a10-b111-3a3b3c3d3e3f",
    "object": "nif_transfer",
    "company_id": "0199a1f0-1c22-7a10-b111-4a4b4c4d4e4f",
    "expires_at": "2026-10-04T09:00:00+00:00",
    "status": "consumed",
    "recipient_account_id": null,
    "issued_at": "2026-09-27T09:00:00+00:00",
    "consumed_at": "2026-09-28T10:30:00+00:00",
    "revoked_at": null
  }
}

Retired X-Active-Profile header sent

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_unknown",
    "subcode": "retired_active_profile_header",
    "message": "La cabecera 'X-Active-Profile' fue retirada de la API v1: la empresa efectiva se indica en el segmento de empresa de la ruta.",
    "param": "X-Active-Profile",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_unknown",
    "request_id": "req_01J8Y3M2Q40000000000000001"
  }
}

Malformed Factuarea-Version header

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid_format",
    "message": "El header 'Factuarea-Version' debe tener formato YYYY-MM-DD.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid_format",
    "request_id": "req_01J8Y3M2Q40000000000000002"
  }
}

Unsupported Factuarea-Version

{
  "error": {
    "type": "invalid_request_error",
    "code": "unsupported_api_version",
    "message": "La versión de API '2020-01-01' no está soportada.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#unsupported_api_version",
    "request_id": "req_01J8Y3M2Q40000000000000003"
  }
}

Missing API key

{
  "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"
  }
}

Invalid API key format

{
  "error": {
    "type": "authentication_error",
    "code": "invalid_api_key",
    "message": "La API key no tiene el formato esperado (debe empezar por fact_live_ o fact_test_).",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#invalid_api_key",
    "request_id": "req_01HKQS5N9JTQM7HVTQP3FBN5XB"
  }
}

Revoked API key

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_revoked",
    "message": "Esta API key ha sido revocada y ya no es válida.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#api_key_revoked",
    "request_id": "req_01HKQS5NA8K7E2V9YDZWMT6RJC"
  }
}

Expired API key

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_expired",
    "message": "Esta API key ha caducado.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#api_key_expired",
    "request_id": "req_01HKQS5NAPIKEYEXPIRED00008"
  }
}

Request IP outside the API key allowlist

{
  "error": {
    "type": "authentication_error",
    "code": "ip_not_allowed",
    "message": "La IP 203.0.113.10 no está autorizada para esta API key.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#ip_not_allowed",
    "request_id": "req_01HKQS5NIPNOTALLOWED000009"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 402 payment_method_required

{
  "error": {
    "type": "payment_required_error",
    "code": "payment_method_required",
    "message": "La cuenta no tiene un método de pago configurado para cobrar el NIF adicional: configúralo y vuelve a intentarlo.",
    "details": {
      "payment_setup_url": "https://billing.stripe.com/p/session/live_YWNjdF8xS2ZHM0RLb0h4RXBGV3lY"
    },
    "doc_url": "https://docs.factuarea.com/guides/errors#payment_method_required",
    "request_id": "req_f15e7a1c0d9b3f46a28c010000"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 402 additional_nif_plan_required

{
  "error": {
    "type": "payment_required_error",
    "code": "additional_nif_plan_required",
    "message": "Tu cuenta no tiene un plan vigente: activa el plan Profesional o superior para añadir NIF.",
    "doc_url": "https://docs.factuarea.com/guides/errors#additional_nif_plan_required",
    "request_id": "req_f15e7a1c0d9b3f46a28c020000"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 402 additional_nif_charge_failed

{
  "error": {
    "type": "payment_required_error",
    "code": "additional_nif_charge_failed",
    "subcode": "additional_nif_charge_failed",
    "message": "No se pudo cobrar el NIF adicional de la cuenta. Detalle: card_declined.",
    "doc_url": "https://docs.factuarea.com/guides/errors#additional_nif_charge_failed",
    "request_id": "req_f15e7a1c0d9b3f46a28c030000"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 403 insufficient_scope

{
  "error": {
    "type": "authorization_error",
    "code": "insufficient_scope",
    "message": "Esta operación requiere el scope 'nif_transfers:write'. Tu API key solo tiene los scopes: ninguno.",
    "doc_url": "https://docs.factuarea.com/guides/errors#insufficient_scope",
    "request_id": "req_d1f0a2b3c4d5e6f708192a0003"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 403 additional_nif_not_in_plan

{
  "error": {
    "type": "authorization_error",
    "code": "additional_nif_not_in_plan",
    "message": "Tu plan no incluye NIF adicionales: pasa a Profesional o superior para añadir más NIF a tu cuenta.",
    "doc_url": "https://docs.factuarea.com/guides/errors#additional_nif_not_in_plan",
    "request_id": "req_d1f0a2b3c4d5e6f708192a0004"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 403 billing_managed_by_provider

{
  "error": {
    "type": "authorization_error",
    "code": "billing_managed_by_provider",
    "message": "La facturación de esta cuenta la gestiona otra cuenta: pide el cambio a quien la paga.",
    "doc_url": "https://docs.factuarea.com/guides/errors#billing_managed_by_provider",
    "request_id": "req_d1f0a2b3c4d5e6f708192a0005"
  }
}

POST /v1/accounts/{account}/nif-transfers/accept · 403 company_read_only

{
  "error": {
    "type": "authorization_error",
    "code": "company_read_only",
    "message": "Tu acceso a esta empresa es de solo lectura.",
    "doc_url": "https://docs.factuarea.com/guides/errors#company_read_only",
    "request_id": "req_d1f0a2b3c4d5e6f708192a0006"
  }
}

Resource not found

{
  "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"
  }
}

Account not found or not the account of the API key

{
  "error": {
    "type": "not_found_error",
    "code": "account_not_found",
    "message": "La cuenta indicada no existe o no es la de tu credencial.",
    "param": "account",
    "doc_url": "https://docs.factuarea.com/guides/errors#account_not_found",
    "request_id": "req_01J8Y3M2Q40000000000000006"
  }
}

Registration company already has data

{
  "error": {
    "type": "conflict_error",
    "code": "resource_conflict",
    "subcode": "empty_registration_company_not_empty",
    "message": "La empresa con la que te registraste ya tiene datos, así que no se puede sustituir por el NIF traspasado. El traspaso no se ha aplicado.",
    "doc_url": "https://docs.factuarea.com/guides/errors#resource_conflict",
    "request_id": "req_01J8Y3M2Q4CF0000000000ERC1"
  }
}

Acquired seat conditions cannot be preserved

{
  "error": {
    "type": "conflict_error",
    "code": "customer_offer_phase_incompatible",
    "subcode": "customer_offer_phase_incompatible",
    "message": "Las condiciones adquiridas del asiento requieren revisión antes de añadir empresas gestionadas.",
    "param": "quantity",
    "details": {
      "reason": "phase_incompatible"
    },
    "doc_url": "https://docs.factuarea.com/guides/errors#customer_offer_phase_incompatible",
    "request_id": "req_01J8Y3M2Q4CF0000000000CSI1"
  }
}

Another operation is in progress

{
  "error": {
    "type": "conflict_error",
    "code": "customer_offer_operation_in_progress",
    "subcode": "customer_offer_operation_in_progress",
    "message": "Hay otra operación de facturación en curso para tu empresa. Espera unos minutos y vuelve a intentarlo; si el aviso continúa, contacta con soporte.",
    "doc_url": "https://docs.factuarea.com/guides/errors#customer_offer_operation_in_progress",
    "request_id": "req_01J8Y3M2Q4CF0000000000COP1"
  }
}

Billing operation still being verified

{
  "error": {
    "type": "conflict_error",
    "code": "customer_offer_legacy_outcome_unknown",
    "message": "Estamos confirmando con el procesador de pagos el resultado de una operación anterior. Espera unos minutos y vuelve a intentarlo; si el aviso continúa, contacta con soporte.",
    "details": {
      "operation_id": "01990c3a-5b2e-7c41-9d3f-2a6b8e1f4c11"
    },
    "doc_url": "https://docs.factuarea.com/guides/errors#customer_offer_legacy_outcome_unknown",
    "request_id": "req_01J8Y3M2Q4CF0000000000COL1"
  }
}

Parameter failed validation

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "El campo `name` es obligatorio y no puede estar vacío.",
    "param": "name",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid",
    "request_id": "req_01HKQS5NGS8Z3T6Q1D2E7FYVSI"
  }
}

Invalid Idempotency-Key format

{
  "error": {
    "type": "invalid_request_error",
    "code": "invalid_param_format",
    "message": "La Idempotency-Key debe tener entre 1 y 255 caracteres ASCII printable.",
    "param": "Idempotency-Key",
    "doc_url": "https://docs.factuarea.com/guides/errors#invalid_param_format",
    "request_id": "req_01HKQS5NIDEMPKEYFORMAT0007"
  }
}

Plan limit reached (authorization)

{
  "error": {
    "type": "authorization_error",
    "code": "max_api_keys_exceeded",
    "message": "Has alcanzado el número máximo de API keys permitido por tu plan. Revoca alguna existente o actualiza tu suscripción.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#max_api_keys_exceeded",
    "request_id": "req_01HKQS5NGS8Z3T6Q1D2E7FYVSJ"
  }
}

Invoice language outside the allowed catalog

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "El idioma no es válido. Valores permitidos: es, en, ca.",
    "param": "language",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid",
    "request_id": "req_01HKQS5NACCTPERSLANGINVAL1"
  }
}

Grants on a member that is not a `member`

{
  "error": {
    "type": "invalid_request_error",
    "code": "grants_only_for_member",
    "message": "Solo un miembro con rol member puede tener permisos por NIF: el titular y los administradores alcanzan todos los NIF de la cuenta.",
    "param": "level",
    "doc_url": "https://docs.factuarea.com/guides/errors#grants_only_for_member",
    "request_id": "req_01HKQS5NACCTGRANTSONLYMEM1"
  }
}

Grant on a tax ID outside the account or the credential scope

{
  "error": {
    "type": "invalid_request_error",
    "code": "grant_company_not_in_account",
    "message": "Ese NIF no pertenece a esta cuenta o queda fuera del ámbito de la credencial.",
    "param": "company",
    "doc_url": "https://docs.factuarea.com/guides/errors#grant_company_not_in_account",
    "request_id": "req_01HKQS5NACCTGRANTNIFOUTAC2"
  }
}

The account already has an external advisor

{
  "error": {
    "type": "invalid_request_error",
    "code": "external_advisor_already_assigned",
    "message": "Esta cuenta ya tiene un asesor externo: retíralo o quítale la marca antes de asignar otro.",
    "param": "external_advisor",
    "doc_url": "https://docs.factuarea.com/guides/errors#external_advisor_already_assigned",
    "request_id": "req_01HKQS5NACCTADVISORTAKEN03"
  }
}

Idempotency key reused with a different payload

{
  "error": {
    "type": "idempotency_error",
    "code": "idempotency_key_reused",
    "message": "La Idempotency-Key 'order-2026-0001' ya se usó con un payload distinto.",
    "param": "Idempotency-Key",
    "doc_url": "https://docs.factuarea.com/guides/errors#idempotency_key_reused",
    "request_id": "req_01J8Y3M2Q40000000000000007"
  }
}

Idempotency-Key missing on an external-effect write

{
  "error": {
    "type": "invalid_request_error",
    "code": "idempotency_key_required",
    "message": "La operación «public-api.v1.invoices.send» exige la cabecera Idempotency-Key desde el 2026-10-01. Envía una clave única por operación (un UUID sirve) y, si reintenta, repite exactamente la misma clave para que la operación no se ejecute dos veces.",
    "param": "Idempotency-Key",
    "doc_url": "https://docs.factuarea.com/guides/errors#idempotency_key_required",
    "request_id": "req_01J8Y3M2Q40000000000000009"
  }
}

Rate limit exceeded

{
  "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"
  }
}

Too many authentication failures (temporary lockout)

{
  "error": {
    "type": "authentication_error",
    "code": "too_many_auth_failures",
    "message": "Has alcanzado el número máximo de intentos de autenticación fallidos. La API key queda bloqueada temporalmente. Reintenta tras el tiempo indicado en `Retry-After`.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#too_many_auth_failures",
    "request_id": "req_01HKQS5NKW1C6W9T4G5H0JBZVM"
  }
}

Too many concurrent uploads in flight

{
  "error": {
    "type": "rate_limit_error",
    "code": "upload_in_flight_budget_exceeded",
    "message": "Tu empresa tiene demasiadas subidas en curso a la vez: este archivo ocupa 10 MB y el margen simultáneo es de 120 MB. Espera a que terminen las subidas en marcha y vuelve a intentarlo dentro de 45 segundos.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#upload_in_flight_budget_exceeded",
    "request_id": "req_01HKQS5NUPLOADINFLIGHT005"
  }
}

Company-wide rate limit exceeded (all keys combined)

{
  "error": {
    "type": "rate_limit_error",
    "code": "company_rate_limit_exceeded",
    "message": "Tu empresa ha superado su límite conjunto de 900 peticiones por minuto, contando a la vez todas sus credenciales. Es un techo de la empresa, así que repartir el tráfico no lo eleva. Reintenta en 12 segundos, o solicita una ampliación de plan si necesitas más capacidad.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#company_rate_limit_exceeded",
    "request_id": "req_01HKQS5NCOMPANYRATELIMIT06"
  }
}

Company-wide monthly quota exhausted (all keys combined)

{
  "error": {
    "type": "rate_limit_error",
    "code": "company_monthly_quota_exceeded",
    "message": "Tu empresa ha agotado su cuota conjunta de 150000 peticiones de este mes, contando a la vez todas sus credenciales. Es un techo de la empresa, así que repartir el tráfico no lo eleva. El contador se reinicia el día 1 del mes siguiente; solicita una ampliación de plan si necesitas más volumen antes.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#company_monthly_quota_exceeded",
    "request_id": "req_01HKQS5NCOMPANYMONTHLY0007"
  }
}

Monthly quota of the API key exhausted

{
  "error": {
    "type": "rate_limit_error",
    "code": "monthly_quota_exceeded",
    "message": "Has agotado tu cuota mensual de 100000 requests. Mejora tu plan para obtener una cuota superior.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#monthly_quota_exceeded",
    "request_id": "req_01HKQS5NMONTHLYQUOTA000011"
  }
}

Portfolio rate limit exceeded (all tax IDs of the account combined)

{
  "error": {
    "type": "rate_limit_error",
    "code": "portfolio_rate_limit_exceeded",
    "message": "La cartera de tu cuenta ha superado su límite conjunto de 1800 peticiones por minuto, contando a la vez todos sus NIF. Es un techo de la cartera, así que repartir el tráfico entre NIF no lo eleva. Reintenta en 12 segundos, o solicita una ampliación de plan si necesitas más capacidad.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#portfolio_rate_limit_exceeded",
    "request_id": "req_01HKQS5NPORTFOLIORATE00012"
  }
}

Portfolio monthly quota exhausted (all tax IDs of the account combined)

{
  "error": {
    "type": "rate_limit_error",
    "code": "portfolio_monthly_quota_exceeded",
    "message": "La cartera de tu cuenta ha agotado su cuota conjunta de 300000 peticiones de este mes, contando a la vez todos sus NIF. Es un techo de la cartera, así que repartir el tráfico entre NIF no lo eleva. El contador se reinicia el día 1 del mes siguiente; solicita una ampliación de plan si necesitas más volumen antes.",
    "param": null,
    "doc_url": "https://docs.factuarea.com/guides/errors#portfolio_monthly_quota_exceeded",
    "request_id": "req_01HKQS5NPORTFOLIOMONTH0013"
  }
}

{
  "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"
  }
}

Accept a tax ID transfer

Authorization

Path Parameters

Headers

Request Body

Response Body

200application/json

400application/json

401application/json

402application/json

403application/json

404application/json

409application/json

422application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`