Scania currently use CATIA V5 as CAD platform and ENOVIA V5 as CAD vault. When supplying CAD data to Scania CATIA V5 data is preferred.
Current release at Scania: CATIA V5-6 R2018 SP3 (also known as R28)
Scania only accepts data that are compatible with, i.e. lower or equal to, the current CATIA release. Scania also use Hot Fix 30, but this is not required to be compatible with Scania.