Diagnosis
You cannot change the fields of authorization object &v1&, sinceauthorizations still exist for it.

System Response
You can not remove any InfoObjects from the definition of theauthorization object nor add any, since otherwise the higher-levelauthorizations and profiles can no longer be interpreted by the system.
You can, however, still change for each InfoCube whether thisauthorization object should be checked.

Procedure
If you really want to change the authorization object, you have tofirst delete the corresponding profiles from the user master recordsand then the profile and authorizations for this authorization object.
Using the where-used list in the initial screen, you can determinewhich users, profiles and authorizations are affected.