There are two possible reasons for deriving a role from an existing role:
Roles derived from another cannot have any additional menu entries.
If additional transaction codes are added to the menu of the original role, they are copied into the derived role.
The authorization data is copied to the derived roles.
The organization level data is only copied the first time the authorization data is adjusted for the derived role. If data is maintained for the organizational levels in the derived role, and if you have maintained the organizational levels using the dialog box, the data is not overwritten by another conciliation (See SAP Note 314513).
To delete the inheritance relationship between two roles, choose the Delete inheritance relationship pushbutton in the Description tab.
You can display an overview of the inheritance of roles by choosing Role → Where-used list. You can go to another role by double-click.
You cannot derive functions from the delivered user roles in your own roles.