Port doesnot contain operation meta data

[ravikb_jboss]

I have created a simple webservice. As part of WS-Security, i have added the jboss-wsse-server.xml i have added the x509 encrypt element. as follows

<jboss-ws-security ...>
.......
<config>
<encrypt type="x509v3" alias="wsse"/>
<requires>
<encryption/>
</requires>
</config>
</jboss-ws-security>

the service was deployed in jbossAS 4.2.1 and running.
i wrote a simple rpc client and when i try to invoke that webservice giving the following exception

javax.xml.rpc.soap.SOAPFaultException: Endpoint {http://test.com/}TestWSPort does not contain operation meta data for: {http://www.w3.org/2001/04/xmlenc#}EncryptedData

could any one have solution; please help me out.

thanks & regards
ravi