CiusAtGovCIUS-AT-GOV 1.1.0, the CIUS of e-Rechnung.gv.at for invoices to the Austrian federal government: the rules of CIUS-AT-NAT and its own, syntax CII or UBL.
CiusAtNatCIUS-AT-NAT 1.0.0, the Austrian national CIUS of EN 16931 with the statutory rules, syntax CII or UBL.