org.apache.xml.security.c14n.CanonicalizationException: Element listFunctions has a relative namespace: xmlns="xxx_xxx_listFunctions"

I am new to Axis2 and webservices. I have a axis2 web services . things run fine when ws-security is turned off. when ws-security is turned on . I get the following exeception in the server log . I debugged the service class method is not called . Attached are two service.xmls used.

The client invoking the webservice get the followoing soap fault - unexpected EOF in prolog

I get the following java exception in tomcat :

org.apache.xml.security.c14n.CanonicalizationException: Element listFunctions has a relative namespace: xmlns="test_vish_listFunctions" at org.apache.xml.security.c14n.implementations.Canonicalizer20010315.handleAttributesSubtree(Unknown Source) at org.apache.xml.security.c14n.implementations.CanonicalizerBase.canonicalizeSubTree(Unknown Source) at org.apache.xml.security.c14n.implementations.CanonicalizerBase.engineCanonicalizeSubTree(Unknown Source) at org.apache.xml.security.c14n.implementations.CanonicalizerBase.engineCanonicalizeSubTree(Unknown Source) at org.apache.xml.security.c14n.Canonicalizer.canonicalizeSubtree(Unknown Source) at org.apache.xml.security.utils.XMLUtils.outputDOM(Unknown Source)

Following is the server.xml when ws-security is off and things works

    <service name="test_vish_listFunctions" targetNamespace="test_vish_listFunctions">
   <description>
        This service is to get the list  functions
   </description>
   <schema schemaNamespace="test_listFunctions"/>
   <parameter name="ServiceClass">vish.web.ws.service.ListFunctionsService</parameter>
   <operation name="listFunctions">
        <messageReceiver  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />
   </operation>
   <module ref="soapmonitor"/>
 </service>

The following the services.xml when ws-security is turned on

<service name="test_vish_listRoutines" targetNamespace="test_vish_listRoutines">
   <description>Service description for test_vish_listRoutines</description>
  <schema schemaNamespace="test_vish_listRoutines"/>
  <parameter name="ServiceClass">test.web.ws.service.ListRoutinesService</parameter>
  <parameter name = "disasbleREST">true</parameter>
  <operation name="listRoutines">
  <messageReceiver class="org.apache.axis2.rpc.receivers.RPCMessageReceiver"/>
</operation>
<module ref="soapmonitor"/>
<module ref="rampart" />
<parameter name = "InflowSecurity"><action>
<items>UsernameToken</items>
<passwordCallbackClass>test.web.ws.control.PWCBHandler</passwordCallbackClass>
</action>
</parameter>
</service>

Please help