Passing authentication to eRoom (eroom access) via SOAPUI

I have create new SOAP project using eroom WSDL.

Some how, when i tried to access the eroom the following error has occured:

<SOAP-ENV:Body>
<SOAP-ENV:Fault>
<SOAP-ENV:faultcode>Server</SOAP-ENV:faultcode>
<SOAP-ENV:faultstring>The message could not be processed by the server.</SOAP-ENV:faultstring>
<SOAP-ENV:detail>
<status xmlns="http://www.eroom.com/eRoomXML/2003/700">
<code>0x800402cf</code>
<description>The parameters for the SOAP method call were invalid, unrecognized, or malformed.</description>
</status>
</SOAP-ENV:detail>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>

Any one has any idea of this? What might have causing this error?
much appreciate if anyone spending time on this =)