<?xml version="1.0" encoding="UTF-8"?>
    <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
       <S:Body>
          <ns2:getAgentsResponse xmlns:ns2="http://ws.server.example.com/">
             <return>
                <messages>
                   <message>
                      <message>Отсутствует элемент 'context'</message>
                      <type>ERROR</type>
                   </message>
                </messages>
             </return>
          </ns2:getAgentsResponse>
       </S:Body>
    </S:Envelope>

    <?xml version="1.0" encoding="utf-8"?>
    <SOAP-ENV:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
      <SOAP-ENV:Body xmlns:ns1="http://ws.server.example.com/">
        <ns1:getAgents>
          <ns1:context>
            <ns1:locale>ru</ns1:locale>
            <ns1:loginName>user</ns1:loginName>
            <ns1:password>pass</ns1:password>
            <ns1:salesPointCode>WEB_SITE</ns1:salesPointCode>
          </ns1:context>
        </ns1:getAgents>
      </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://ws.server.example.com/">
  <SOAP-ENV:Body>
<ns1:getAgents>
  <context>
    <locale>ru</locale>
    <loginName>user</loginName>
    <password>pass</password>
    <salesPointCode>WEB_SITE</salesPointCode>
  </context>
</ns1:getAgents>
  </SOAP-ENV:Body>