WSO2 DAS server configuration issue - Dropping wro

I have configured DAS with API manager server using REST client, but not able to push data to DAS server. Please see error logs in DAS server. Could you please help me to understand what is wring in configuration?

TID: [-1234] [] [2016-05-20 18:07:05,566] ERROR {org.wso2.carbon.databridge.core.internal.queue.QueueWorker} -  Dropping wrongly formatted event sent for -1234 {org.wso2.carbon.databridge.core.internal.queue.QueueWorker}
org.wso2.carbon.databridge.core.exception.EventConversionException: Error when converting org.wso2.apimgt.statistics.throttle:1.0.0 of event bundle with events 1
        at org.wso2.carbon.databridge.receiver.thrift.converter.ThriftEventConverter.createEventList(ThriftEventConverter.java:181)
        at org.wso2.carbon.databridge.receiver.thrift.converter.ThriftEventConverter.toEventList(ThriftEventConverter.java:90)
        at org.wso2.carbon.databridge.core.internal.queue.QueueWorker.run(QueueWorker.java:73)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: org.wso2.carbon.databridge.core.exception.EventConversionException: No StreamDefinition for streamId org.wso2.apimgt.statistics.throttle:1.0.0 present in cache
        at org.wso2.carbon.databridge.receiver.thrift.converter.ThriftEventConverter.createEventList(ThriftEventConverter.java:166)
        ... 7 more

Can you try redeploying the car app again. For that first do following

Delete the .car application from /repository/deployment/server/carbonapps
Delete any existing streams defs (related to APIM stats) by login to DAS management console and going to Manage > Event > Streams
Re deploy car app by putting it in /repository/deployment/server/carbonapps

If everything goes well you would see two scripts in Manage > Batch Analytics > Scripts section. Try to execute each script and see if there is any error.