execute AUDIT SESSION command by non-SYS id

Hello

i need to enable a database ID (not sys and not system) to execute audit session command. I am getting this error in 11.2.0.4

>AUDIT SESSION BY &&1;

Enter value for 1: test1

AUDIT SESSION BY test1

                     *

ERROR at line 1:

ORA-01031: insufficient privileges

Even though I am connected by the ID which was granted "AUDIT ANY" privilege (via a role as well as directly).  Is there a different privilege that this ID needs to be able to turn on auditing?

Or can it only be done by SYS?

Thank you