> you are perfectly able to determine the order of the invoices. But you can't determine if there are any gaps which is what the Italian ruling seemed to be co

> you are perfectly able to determine the order of the invoices. But you can't determine if there are any gaps which is what the Italian ruling seemed to be concerned with (as best I could follow the Google translation which was pretty bad) and the Germans aren't bothered about. I think if it were me, I'd ere on the side of caution and have them be sequential (ordered, gapless).