442: Certificate blocked or a test certificate
What it means
FACe error 442 means the certificate used to sign the invoice is on a block list or is a test certificate.
The usual cause
The certificate is blocked or meant only for testing.
How to fix it
Sign the invoice with a valid production certificate and send it again.
The code as published
El certificado usado en la firma de la factura está en una lista de bloqueo o es de pruebas Read the official document . Source: FACe, Códigos de Error, version 3.3 (octubre de 2017), published by Secretaría General de Administración Digital, Equipo FACe, read on 8 November 2026.
Other FACe codes
- 408 Invoice format incorrect
- 409 Managing body code not found or inactive
- 410 Processing unit code not found or inactive
- 411 Accounting office code not found or inactive
- 412 Unit codes do not belong together
- 413 Unit relation not active
- 414 Invoice number already exists
- 415 Invoice already exists
- 416 Wrong number of administrative centres
- 417 Administrative centre code missing
- 418 Payer, receiver or fiscal centre wrong
- 419 Only individual invoices accepted
- 420 Batches not accepted
- 421 Party type incorrect
- 422 Issuer type wrong for a third-party invoice
- 423 Individual's name missing
- 424 Company name missing
- 426 IBAN required for this payment method
- 427 Person type missing
- 428 Invoice signature incorrect
- 430 Invoice version not recognised
- 431 Date format error
- 432 Certificate class not accepted for signing
- 433 Too many attachments
- 434 Signing certificate incomplete
- 437 Extensions not accepted
- 438 Certificate class not accepted for delivery
- 439 Certificate not accepted for signing
- 440 Signature policy incorrect
- 441 Test units not allowed here
- 443 Corrective invoice format incorrect
- 444 Issuer and assignee identifiers match
- 445 Invoice number required
- 446 Line description required
- 447 Issuer's DNI incorrect