Which and what log file should I look in?

There are three log files.
  1 - one for the admin while generating the package: $WS_HOME/admin/log/admin.log
  2 - one for the server when the server is running:: $WS_HOME/server/log/server.log
  3 - one per service: $WS_HOME/server/log/server_NAME.log
                                  $WS_HOME/server/log/client_NAME.log

The log per service can be enabled by setting the property << xws.service.traceLevel = debug >>

Some debug traces can be enable by changing the two files:
  ->  $WS_HOME/admin/conf/log4j.xml
  ->  $WS_HOME/server/conf/log4j.xml

For example, to set the debug, change the <level> element:
<logger name="com.axway.xws" additivity="false">
<level value="debug" />
<appender-ref ref="xwsstdout" />
<appender-ref ref="stdrollingfile" />
</logger>