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Selecting and Displaying the Current
Controlling Area 
When you call up the first business transaction in Controlling, you need to select a controlling area.

You cannot execute a transaction for more than one controlling area at the same time.
If you are working with multiple sessions, note that changing the controlling area setting in one session affects all other sessions. It is not possible to work with different controlling areas in different sessions.
...
1.
Enter the
controlling area in the dialog box.
The system saves your entry as a user parameter so that you do not need to
enter the controlling area again.

If you mainly work in the same controlling area, you can store a default value as a user parameter:
· Choose System ® User Profile ® User Parameters.
· Enter CAC as the parameter ID (for controlling area).
· Enter the required controlling area as a parameter value in the dialog box.
· Save your entries.
At the next system logon, the system automatically sets the specified controlling area.
2.
You can display or
change the current controlling area in any transaction in Controlling.
Choose Extras ® Set CO
Area.
A dialog box appears
displaying the current controlling area. You can overwrite it if you
want.
