NIF_INVALID_FORMAT
The NIF '‹value›' has an invalid format
Category: Customers
| HTTP status | 422 Unprocessable Content |
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/NIF_INVALID_FORMAT",
"title": "NIF_INVALID_FORMAT",
"detail": "The NIF '‹value›' has an invalid format",
"instance": "/v1/<resource>",
"errors": [],
"success": false,
"error": {
"code": "NIF_INVALID_FORMAT",
"message": "The NIF '‹value›' has an invalid format",
"details": {}
},
"meta": {
"timestamp": "2026-05-21T10:00:00Z",
"request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
}
}The type URI is stable and always resolves to this page.
Message
Send the request with Accept-Language: <es|en|ca> to receive the message in your preferred language.
Placeholders like
‹value›are filled in at runtime with the actual values of your request.
Other errors in this category
ALTERNATIVE_ID_ACTUALLY_IN_CENSUS
The identifier '‹value›' is registered in the AEAT census, so it cannot be declared as not registered (07). Enter it as a NIF instead.
ALTERNATIVE_ID_AND_NIF_EXCLUSIVE
The customer cannot carry both a NIF and an alternative identifier. Use only one
ALTERNATIVE_ID_COUNTRY_REQUIRED
The country of the alternative identifier is missing (alternative_id.country_code). It is required except for the PASSPORT and NOT_REGISTERED types, which are taken as Spanish when it is omitted.
ALTERNATIVE_ID_INVALID
The alternative identifier is not valid
ALTERNATIVE_ID_REQUIRES_SPAIN
Type NOT_REGISTERED (07) is only valid for Spain; received country: '‹value›'