While it is possible to reset the root suffix for your LDAP organization tree (Schema version 2), or domain component tree (Schema version 1), this should be done with great care. It would be better to rerun the configuration program to do this.
Log in as an administrator with permission to change the configuration.
Change to the /etc/opt/SUNWics5/cal/config directory.
Save your old ics.conf file by copying and renaming it.
Edit one of the parameters as shown in the following table:
Root suffix of the DC tree in the directory. Required for multiple domain support using Schema version 1, and Schema version 2 compatibility mode (1.5). The default is "o=internet".
Root suffix of the DIT (Organization Tree) for Schema version 2. No default value.
Save the file as ics.conf.
Restart Calendar Server: