By default logs are stored in /var/opt/novell/nam/logs/idp/tomcat/catalina.out. Please check the file in case of any problems with authentication.
The stated below optional parameters (KEY/Value) for authentication methods are available starting from NAM AA plug-in 2.0.76 and later:
DEBUG: parameter that allows to collect additional information in the log file. With this parameter enabled all data on server requests and server responses will be added to the log file.Value: 1, means that the debug logging is enabled.
LOGFILE: path to plug-in log file in case it should be saved in a different place.Value: full file path to the log file (e.g. /tmp/NAMAAplugin.log)