You can delete a class entry from the dynamic class descriptor table by deleting the class profile from the CDT class and refreshing the dynamic CDT. If the class is active, you should deactivate the class before deleting the CDT profile and refreshing the dynamic CDT. If you do not deactivate the class, then if you create a class with the same POSIT value in the future, the class will automatically be active. The same consideration applies to each SETROPTS option controlled by a shared POSIT value. (See the table in Processing options that are controlled by a shared POSIT value.