3 to White Mesa, dataEncodingUnknown

POST http://www.whitemesa.net/soap12/add-test-rpc HTTP/1.1
Content-Type: application/soap+xml; charset=utf-8; action=""
SOAPAction: 
Host: localhost:8080
Content-Length: 562
Expect: 100-continue
Connection: Close

<?xml version="1.0" encoding="utf-16"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2002/12/soap-envelope"
                  xmlns:soapenc="http://www.w3.org/2002/12/soap-encoding"
                  xmlns:tns="http://whitemesa.net/wsdl/soap12-test"
                  xmlns:types="http://whitemesa.net/wsdl/soap12-test/encodedTypes"
                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <soap:Body>
    <q1:echoString xmlns:q1="http://soapinterop.org/">
      <inputString soap:encodingStyle="http://example.org/unknownEncoding">xsi:type="xsd:string">Hello Soap 1.2</inputString>
    </q1:echoString>
  </soap:Body>
</soap:Envelope>

ResponseCode: 500 (Internal Server Error)
Via:1.0 RED-PRXY-24, 1.1 RED-PRXY-21
Content-Length:540
Date:Mon, 17 Mar 2003 04:43:30 GMT
Content-Type:application/soap+xml; charset="utf-8"
Server:WhiteMesa SOAP Server/3.0

<?xml version="1.0" encoding="utf-16"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://www.w3.org/2002/12/soap-envelope">
  <SOAP-ENV:Body>
    <SOAP-ENV:Fault>
      <SOAP-ENV:Code>
        <SOAP-ENV:Value xmlns:ns="http://www.w3.org/2002/12/soap-envelope">ns:DataEncodingUnknown</SOAP-ENV:Value>
      </SOAP-ENV:Code>
      <SOAP-ENV:Reason>
        <SOAP-ENV:Text xml:lang="en">Method: 'echoString' encodingStyle on method wrapper or parameter accessor conflicts with WSDL definition.</SOAP-ENV:Text>
      </SOAP-ENV:Reason>
      <SOAP-ENV:Detail />
    </SOAP-ENV:Fault>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>