def result = resp.Body.elementName

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Body>
        <ns2:**Response** xmlns:ns2="URL" xmlns="URL" xmlns:ns4="URL" xmlns:ns3="URL" xmlns:ns5="URL">
             <something>Code</something>
             <somethingDescription>Message</somethingDescription>
         <ns2:pending/>
             <ns2:posted/>
     </ns2:Response>
 </soapenv:Body>

def xmlContent = ctx.getPreviousResult().getResponseDataAsString();
   def resp = new XmlSlurper().parseText(xmlContent);

   def result = resp.Body.Response;
   def respCode = result.reasonCode;