In Spain localization, it would be very useful to have another field in the SII History call "SII Status". This field should be final status of the document (as it is shown in Posted documents), and it will allow to filter documents with error.

It would be very useful as well to have a new Queue in the Financials homepage with this SII Status = Error (Incorrect, Communication Error, Failed, Not Supported) to get control of this documents.