I found the SAS81A arrival missing from current (AIRAC 2204) Navigraph FMS data in Aivlasoft EFB2 database. I have not checked, but it could be missing from other Navigraph databases for other FMS too.
I was looking at the right place, however, the problem was that I did not update the EFB2 database after installation of new ZSPD scenery. The RNAV STAR showed up correctly after the updated the EFB2 database with the updated ZSPD scenery.