ErrorsAll codes
VERIFACTU_REPRESENTATION_NOT_SIGNED
You cannot enable VeriFactu on this invoice: the AEAT representation model for this NIF has not been signed yet
Category: VeriFactu
Example response
When this error occurs, the API returns a JSON response with the following shape:
{
"type": "https://docs.beel.es/errors/VERIFACTU_REPRESENTATION_NOT_SIGNED",
"title": "VERIFACTU_REPRESENTATION_NOT_SIGNED",
"detail": "You cannot enable VeriFactu on this invoice: the AEAT representation model for this NIF has not been signed yet",
"instance": "/v1/<resource>",
"errors": [],
"success": false,
"error": {
"code": "VERIFACTU_REPRESENTATION_NOT_SIGNED",
"message": "You cannot enable VeriFactu on this invoice: the AEAT representation model for this NIF has not been signed yet",
"details": {}
},
"meta": {
"timestamp": "2026-05-21T10:00:00Z",
"request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
}
}The type URI is stable and always resolves to this page.
Message
You cannot enable VeriFactu on this invoice: the AEAT representation model for this NIF has not been signed yet
No puedes activar VeriFactu en esta factura: falta firmar el modelo de representación AEAT de este NIF
No pots activar VeriFactu en aquesta factura: falta signar el model de representació davant l''AEAT d''aquest NIF
Send the request with Accept-Language: <es|en|ca> to receive the message in your preferred language.
Other errors in this category
ALREADY_DISABLED
VeriFactu is already disabled for this user
ALREADY_ENABLED
VeriFactu is already enabled for this user
ALREADY_REGISTERED
The NIF is already registered in VeriFactu
API_COMMUNICATION_ERROR
Error communicating with the VeriFactu API
API_KEY_NOT_CONFIGURED
The VeriFactu API key has not been configured