Beginning with z/OS® V1R8, you can specify that a class does not allow generic profile processing, using the GENERIC=DISALLOWED keyword on the ICHERCDE macro, or the CDTINFO(GENERIC(DISALLOWED)) keyword on the RDEFINE or RALTER command. If you are sharing a z/OS V1R8 (or higher) RACF® database with a lower-level system, and you plan to define classes that do not allow generic profile processing, there are some things that you need to consider: