IMMUTABLE_ENTITY

Entity type (individual/company) cannot be changed. This field is immutable


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

When it happens

The request changes the company's entity_type, which cannot change once set. Nothing was written.

How to fix it

Drop the field from the request. Sending the value it already has is not a change and is accepted.

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.

PATCH /v1/companies/{company_id}

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/IMMUTABLE_ENTITY_TYPE",
  "title": "IMMUTABLE_ENTITY_TYPE",
  "detail": "Entity type (individual/company) cannot be changed. This field is immutable",
  "instance": "/v1/<resource>",
  "errors": [],
  "success": false,
  "error": {
    "code": "IMMUTABLE_ENTITY_TYPE",
    "message": "Entity type (individual/company) cannot be changed. This field is immutable",
    "details": {}
  },
  "meta": {
    "timestamp": "2026-05-21T10:00:00Z",
    "request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

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

Message

Entity type (individual/company) cannot be changed. This field is immutable

No se puede cambiar el tipo de entidad (persona física/jurídica). Este campo es inmutable

No es pot canviar el tipus d'entitat (persona física/jurídica). Aquest camp és immutable

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

IMMUTABLE_ENTITY_TYPE