How to test/invoke Webservice deployed in weblogic server 10.3.x

Hi, we have an application and few webservice deployed on WebLogic server 10.3. I would like to test one of Get<Method> operation.

Is there a quickest way to test this webservice? I tried to invoke web service using 11g Fusion Middleware Control Console > Test WebService feature. Where oracle provides a way to test the WS

<localhost>:7001/console = weblogic server
<localhost>:7001/em = Fusion Middleware Control Console

I think, I'm passing required input arguments when invoking this WS but getting below error as an output.

S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope">
   <S:Body>
      <ns3:Fault xmlns:ns2="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns3="http://www.w3.org/2003/05/soap-envelope">
         <ns3:Code>
            <ns3:Value>ns3:Sender</ns3:Value>
            <ns3:Subcode>
               <ns3:Value xmlns:ns0="http://ocs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">ns0:InvalidSecurity</ns3:Value>
            </ns3:Subcode>
         </ns3:Code>
         <ns3:Reason>
            <ns3:Text xml:lang="en">InvalidSecurity : error in processing the WS-Security security header</ns3:Text>
         </ns3:Reason>
      </ns3:Fault>
   </S:Body>
</S:Envelope>

My request is...
Is there an quickest way to test this? any freware or license prodcut (can use trial version)
How to debug & trouble shoot?

please note...this is deployed onto WLS and it is integated with Oracle Internet Directory

If you need further information....let me kow

thanks in advance.