Newbie question

getting below error when i submit a request

REQUEST:
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:etap="https://skw.ets.org/eTapas/">
<soap:Header>
<ClientID>username</ClientID>
<Password>password</Password>
<soap:Header/>
<soap:Body>
<etap:InitiateTestSession>
<!--Optional:-->
<etap:TestCode>WRKFC</etap:TestCode>
<!--Optional:-->
<etap:Locale>en-US</etap:Locale>
<!--Optional:-->
<CandidateXML>&lt;parameterConfig name=&quot;CANDIDATE_INFO&quot; xmlns=&quot;https://skw.ets.org/eTapas/schema/parameterConfig/&quot; &gt; &lt;parameter name=&quot;CANDIDATE_ID&quot; value=&quot;123456&quot;/&gt; &lt;parameterGroup name=&quot;ANALYSIS&quot;&gt; &lt;parameter name=&quot;GENDER&quot; value=&quot;M&quot;/&gt; &lt;parameter name=&quot;ETHNICITY&quot; value=&quot;WHITE&quot;/&gt; &lt;parameterList name=&quot;PREFERENCES&quot; value=&quot;SOME_PREFS&quot;&gt; &lt;list&gt;string string&lt;/list&gt; &lt;/parameterList&gt; &lt;parameterGroup name=&quot;BIQS&quot; value=&quot;BEFORE-TEST&quot;&gt; &lt;parameter name=&quot;BIQ1&quot; value=&quot;A&quot;/&gt; &lt;parameter name=&quot;BIQ2&quot; value=&quot;B&quot;/&gt; &lt;parameter name=&quot;BIQ3&quot; value=&quot;C&quot;/&gt; &lt;/parameterGroup&gt; &lt;parameterGroup name=&quot;SURVEY&quot; value=&quot;AFTER-TEST&quot;&gt; &lt;parameter name=&quot;Q1&quot; value=&quot;A&quot;/&gt; &lt;parameter name=&quot;Q2&quot; value=&quot;B&quot;/&gt; &lt;parameter name=&quot;Q3&quot; value=&quot;C&quot;/&gt; &lt;/parameterGroup&gt; &lt;/parameterGroup&gt; &lt;/parameterConfig&gt; </CandidateXML>
</etap:InitiateTestSession>
</soap:Body>
</soap:Envelope>


RESPONSE:
HTTP/1.1 400 Bad Request
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Date: Thu, 03 Oct 2013 12:59:32 GMT
Content-Length: 0
Set-Cookie: BIGipServerpool_skw-dev.ets.org_443=rd1o00000000000000000000ffff0a61c849o443; path=/

Enable WS-A, set the default action

Please elt me know what info you need to provide a solution..