SERIES_UNASSIGNED_TYPE_NOT

Set the series' document type. Unassigned series can no longer be created: corrective invoices need a series of their own.

Category: Account settings


HTTP status	`422` Unprocessable Content
Retry	After fixing the cause

When it happens

The request creates a series with document_type: UNASSIGNED, or moves an existing series to it. UNASSIGNED only survives on series created before types existed.

How to fix it

Send STANDARD, SIMPLIFIED, CORRECTIVE or PROFORMA. Corrective invoices need a CORRECTIVE series of their own.

Retry

Not as is: the same request fails the same way. Fix the cause described above, then send the request again, under a new Idempotency-Key if the body changed.

Returned by

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

Rules that cite this code

Example response

When this error occurs, the API answers 422 Unprocessable Content with a JSON body of this shape:

{
  "type": "https://docs.beel.es/errors/SERIES_UNASSIGNED_TYPE_NOT_ALLOWED",
  "title": "SERIES_UNASSIGNED_TYPE_NOT_ALLOWED",
  "detail": "Set the series' document type. Unassigned series can no longer be created: corrective invoices need a series of their own.",
  "instance": "/v1/<resource>",
  "errors": [],
  "success": false,
  "error": {
    "code": "SERIES_UNASSIGNED_TYPE_NOT_ALLOWED",
    "message": "Set the series' document type. Unassigned series can no longer be created: corrective invoices need a series of their own.",
    "details": {}
  },
  "meta": {
    "timestamp": "2026-05-21T10:00:00Z",
    "request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

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

Message

Set the series' document type. Unassigned series can no longer be created: corrective invoices need a series of their own.

Indica el tipo de documento de la serie. Ya no se crean series sin asignar: las rectificativas necesitan una serie propia.

Indica el tipus de document de la sèrie. Ja no es creen sèries sense assignar: les rectificatives necessiten una sèrie pròpia.

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

Other errors in this category

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

FISCAL_IDENTITY_LIVE_ONLY

This company is live. In Test mode you can only change how the invoice looks (logo, colour, template, languages and additional information). Fiscal details are edited in Live mode

SERIES_UNASSIGNED_TYPE_NOT_ALLOWED