Step,
1 - Configure RIB through rpc, and NPE will appear

2016-01-25 16:52:03,190 | ERROR | lt-dispatcher-17 | DataTreeChangeListenerActor | 143 - org.opendaylight.controller.sal-distributed-datastore - 1.3.0.SNAPSHOT | Error notifying listener org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter@f9e8182
java.lang.NullPointerException
at org.opendaylight.protocol.bgp.openconfig.impl.moduleconfig.BGPOpenConfigListener.onOpenConfigRemoved(BGPOpenConfigListener.java:81)[284:org.opendaylight.bgpcep.bgp-openconfig-impl:0.5.0.SNAPSHOT]
at org.opendaylight.protocol.bgp.openconfig.impl.moduleconfig.BGPOpenConfigListener.onDataTreeChanged(BGPOpenConfigListener.java:58)[284:org.opendaylight.bgpcep.bgp-openconfig-impl:0.5.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter.onDataTreeChanged(BindingDOMDataTreeChangeListenerAdapter.java:41)[118:org.opendaylight.controller.sal-binding-broker-impl:1.3.0.SNAPSHOT]
at org.opendaylight.controller.cluster.datastore.DataTreeChangeListenerActor.dataChanged(DataTreeChangeListenerActor.java:53)[143:org.opendaylight.controller.sal-distributed-datastore:1.3.0.SNAPSHOT]
at org.opendaylight.controller.cluster.datastore.DataTreeChangeListenerActor.handleReceive(DataTreeChangeListenerActor.java:37)[143:org.opendaylight.controller.sal-distributed-datastore:1.3.0.SNAPSHOT]
at org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor.onReceive(AbstractUntypedActor.java:34)[139:org.opendaylight.controller.sal-clustering-commons:1.3.0.SNAPSHOT]
at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)[128:com.typesafe.akka.actor:2.3.14]
at akka.actor.Actor$class.aroundReceive(Actor.scala:467)[128:com.typesafe.akka.actor:2.3.14]
at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)[128:com.typesafe.akka.actor:2.3.14]
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)[128:com.typesafe.akka.actor:2.3.14]
at akka.actor.ActorCell.invoke(ActorCell.scala:487)[128:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)[128:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.Mailbox.run(Mailbox.scala:220)[128:com.typesafe.akka.actor:2.3.14]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)[128:com.typesafe.akka.actor:2.3.14]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)[125:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)[125:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)[125:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)[125:org.scala-lang.scala-library:2.11.7.v20150622-112736-1fbce4612c]