Deleting Security Classes
When you no longer need a security class, you can delete it from the security class dimension. Before you delete a security class from an application, you must disassociate it from the application elements to which it is assigned.
You can disassociate an entity, account, or scenario from a security class by modifying the security class in the metadata file. You can disassociate a journal from a security class by modifying the journal file or by updating the security class for the journal in the Process Journals module.
To delete security classes: