You can debug Delegated Administrator further by examining the server logs generated by your Web container.
Web Server maintains access and error logs, located in the following path:
/web_server_base/https-machine name/logs
where
web_server_base is the path where Web Server software is installed.
machine name is the name of the machine where Web Server is running.
Application Server 7.x maintains access and error logs, located in the following path:
/application_server7_base/domains/domain1/server1/logs
where
application_server7_base is the path where Application Server 7.x software is installed.
Application Server 8.x maintains access and error logs, located in the following paths.
Server log:
/application_server8_base/domains/domain1/logs
Access log:
/application_server8_base/domains/domain1/logs/access/server_access_log
where
application_server8_base is the path where Application Server 8.x software is installed.