In previous versions of JBoss EAP 6, a rollback of a composite operation to remove and re-add an Apache log4j appender would fail if the appender's name was staying the same. The rollback of the composite operation would fail because the reference to the previous log4j appender would have already been removed. This issue was fixed by not validating whether the reference to the log4j appender exists, as it may be created later. As a result of this fix, no errors should be seen when a composite operation to remove and re-add an Apache log4j appender is rolled back.