Axis Fault: Must Understand check failed for header

Hi,

      I am using Axis2 1.5, to consume WCF service. Axis2 Client is based on java(1.7)
mentioned below sample code and Error. WCF Service is running in secure mode and i have generated
client stub directly from wcf url. I have also imported required certificate into client Keystore.

When i invoke operation on WCF service, i get error as org.apache.axis2.AxisFault: Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action.

I googled and tried various solution but did not help. For Example tried following.
stub._getServiceClient().getServiceContext().getConfigurationContext().setProperty(AddressingConstants.ADD_MUST_UNDERSTAND_TO_ADDRESSING_HEADERS,
    Boolean.FALSE);

Can anyone suggest, how to fix it? 

Code

====       
System.setProperty("javax.net.ssl.keyStore", "C:\\Program Files (x86)\\Java\\jdk1.7.0\\jre\\lib\\security\\cacerts");
System.setProperty ("javax.net.ssl.keyStorePassword", "changeit");
System.setProperty("javax.net.ssl.keyStoreType", "jks");
System.setProperty("javax.net.ssl.trustStore","C:\\Program Files (x86)\\Java\\jdk1.7.0\\jre\\lib\\security\\cacerts");
System.setProperty("javax.net.ssl.trustStorePassword","changeit");
System.setProperty("javax.net.ssl.trustStoreType","jks");
   
SKMSSystemInfoServiceStub  stub = new SKMSSystemInfoServiceStub();
GetUtilitySecurityLevelInfoDocument utilDoc = GetUtilitySecurityLevelInfoDocument.Factory.newInstance();
GetUtilitySecurityLevelInfo  info = utilDoc.addNewGetUtilitySecurityLevelInfo();
GetUtilitySecurityLevelInfoRequest request = info.addNewRequest();
request.setUtilityCode("utc");
stub.getUtilitySecurityLevelInfo(utilDoc);

Error
org.apache.axis2.AxisFault: Must Understand check failed for header http://www.w3.org/2005/08/addressing : Action
at org.apache.axis2.engine.AxisEngine.checkMustUnderstand(AxisEngine.java:105)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:171)
at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:364)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:421)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)


Thanks,
Harish