Flex messaging (Flex Data Services, FDS, FDS2, now called LiveCycle) requires that the display-name entry be in the web.xml (for sure in JBoss, I assume in other Java servers).  Otherwise you will get errors similar to these:


08:04:06,018 ERROR Servlet threw load() exception
java.lang.NullPointerException
at flex.management.BaseControl.getObjectName(BaseControl.java:287)
at flex.management.BaseControl.register(BaseControl.java:148)