SERIES_DEFAULT_NOT_FOUND
You have no default invoice series. Create a series in settings before issuing invoices.
Category: Account settings
| HTTP status | 422 Unprocessable Content |
| Retry | After fixing the cause |
When it happens
The request did not send series_id, and the company has no default series for standard invoices. The default series for simplified and corrective invoices are created on first use, so this is only about STANDARD. This is account configuration, not a problem with the request. error.details.expected_document_type says which type was needed.
How to fix it
Check which defaults are missing with GET /v1/companies/{company_id}/series/defaults, then create the missing ones with PUT on the same path, or create a series of that type and make it the default. Or send an explicit series_id.
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.
POST /v1/companies/{company_id}/invoicesPOST /v1/companies/{company_id}/invoices/{invoice_id}/issue
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_DEFAULT_NOT_FOUND",
"title": "SERIES_DEFAULT_NOT_FOUND",
"detail": "You have no default invoice series. Create a series in settings before issuing invoices.",
"instance": "/v1/<resource>",
"errors": [],
"success": false,
"error": {
"code": "SERIES_DEFAULT_NOT_FOUND",
"message": "You have no default invoice series. Create a series in settings before issuing invoices.",
"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.
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
Keep exploring
SERIES_DEFAULT_CONFLICT
Another operation changed the default series for this document type at the same time. Please try again.
SERIES_DOCUMENT_TYPE_LOCKED_HAS_INVOICES
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.