Administrator Logon 
You use the administrator logon to perform administrator tasks such as managing access requests, managing access risks, maintaining roles, and performing superuser and firefighter tasks.
The application provides two options for administrator logon:
NetWeaver Business Client (NWBC)
To access the NWBC logon, use the SAP GUI to log onto the Access Control system, and start the NWBC transaction.
Portal
To access the Portal logon, use the link provided by the administrator.