function Execute-sOAPRequest
(
        [XMl]    $SOAPRequest,
        [String] $URL
)
{
        wrITe-host "Sending SOAP Request To Server: $URL"
        $soapWebrequest = [System.Net.WebRequest]::Create($URL)
        $soapWebRequest.Headers.Add("SOAPAction","`"http://www.facilities.co.za/valid8service/valid8service/Valid8Address`"")
        $soapWebRequest.ContentType = "text/xML;charset=`"utf-8`""
        $soapWebRequest.Accept      = "text/xml"
        $soapWebRequest.Method      = "POST"
       
        write-host "Initiating Send."
        $requestStream = $soapWebRequest.GetRequestStream()
        $SOAPRequest.Save($requestStream)
        $requestStream.Close()
       
        write-host "Send complete, Waiting For Response."
        $resp = $soapWebRequest.GetResponse()
        $responseStream = $resp.GetResponseStream()
        $soapReader = [System.IO.StreamReader]($responseStream)
        $ReturnXml = [Xml] $soapReader.ReadToEnd()
        $responseStream.Close()
       
        write-host "Response Received."
        return $ReturnXml
}
$url = 'http://www.facilities.co.za/valid8service/valid8service.asmx'
$soap = [xml]@'
<&#63;xml version="1.0" encoding="utf-8"?>
<soap12:envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <Valid8Address xmlns="http://www.facilities.co.za/valid8service/valid8service">
      <ID>string</ID>
      <Address1></Address1>
      <Address2></Address2>
      <Address3></Address3>
      <Address4></Address4>
      <Address5></Address5>
      <Address6></Address6>
      <PostCode></PostCode>
    </Valid8Address>
  </soap12:Body>
</soap12:Envelope>
'@
$ret = Execute-SOAPRequest $soap $url

$ret | Export-Clixml  c:\1.xml;Get-Content c:\1.xml