You can debug Delegated Administrator further by examining the logs generated by Directory Server and Access Manager.
Directory Server maintains access and error logs, located in the following path:
/var/opt/mps/serverroot/slapd-hostname/logs
where
hostnameis the name of the machine where Directory Server is running.
Access Manager maintains log files in the following paths:
/var/opt/SUNWam/debug
The preceding path contains the amProfile and amAuth logs.
/var/opt/SUNWam/logs
The preceding path contains the amAdmin.access and amAdmin.error logs.