SERIES_DOCUMENT_TYPE_LOCKED_HAS

The document type of a series that has already numbered invoices cannot be changed: it would number two types in the same sequence (RD 1619/2012, arts. 6.1.a and 7.1.a). Create a new series for the other type.

Category: Account settings


HTTP status	`400` Bad Request
Retry	No

When it happens

You tried to change document_type on a series that has already numbered at least one invoice (numbering_locked is true). It would number two types in one sequence. An UNASSIGNED series can still be given a type.

How to fix it

Create a new series of the type you need.

Retry

Do not retry. The outcome is final: sending the same request again gets the same answer.

Returned by

The operations where this code is most likely. The list is not exhaustive.

PATCH /v1/companies/{company_id}/series/{series_id}

Rules that cite this code

Example response

When this error occurs, the API answers 400 Bad Request with a JSON body of this shape:

{
  "type": "https://docs.beel.es/errors/SERIES_DOCUMENT_TYPE_LOCKED_HAS_INVOICES",
  "title": "SERIES_DOCUMENT_TYPE_LOCKED_HAS_INVOICES",
  "detail": "The document type of a series that has already numbered invoices cannot be changed: it would number two types in the same sequence (RD 1619/2012, arts. 6.1.a and 7.1.a). Create a new series for the other type.",
  "instance": "/v1/<resource>",
  "errors": [],
  "success": false,
  "error": {
    "code": "SERIES_DOCUMENT_TYPE_LOCKED_HAS_INVOICES",
    "message": "The document type of a series that has already numbered invoices cannot be changed: it would number two types in the same sequence (RD 1619/2012, arts. 6.1.a and 7.1.a). Create a new series for the other type.",
    "details": {}
  },
  "meta": {
    "timestamp": "2026-05-21T10:00:00Z",
    "request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

The type URI is stable and always resolves to this page.

Message

No se puede cambiar el tipo de documento de una serie que ya ha numerado facturas: numeraría dos tipos en la misma secuencia (RD 1619/2012, arts. 6.1.a y 7.1.a). Crea una serie nueva para el otro tipo.

No es pot canviar el tipus de document d'una sèrie que ja ha numerat factures: numeraria dos tipus en la mateixa seqüència (RD 1619/2012, arts. 6.1.a i 7.1.a). Crea una sèrie nova per a l'altre tipus.

Send the request with Accept-Language: <es|en|ca> to receive the message in your preferred language.

Other errors in this category

ACTIVE_CANNOT_DELETE

Cannot delete an active series. Deactivate it first

DEFAULT_CANNOT_BE_UNMARKED

Cannot unmark the default series. Set another series as default first

DEFAULT_CANNOT_DEACTIVATE

Cannot deactivate the default series. Set another series as default first

DEFAULT_CANNOT_DELETE

Cannot delete the default series. Set another series as default first

ENTITY_TYPE_INCONSISTENT_WITH_NIF

The entity type ‹value› does not match the NIF ‹value›: an individual is identified by a DNI or NIE, and a company or entity by a NIF that starts with a legal-form letter

SERIES_DOCUMENT_TYPE_LOCKED_HAS_INVOICES