title: how to recognise mandatory and optional fields in the xml
body: <p>Our Business had given only WSDL which contains 200 elements and  we are not aware of mandatory and optional fields , Once i imported WSDL in to the soap tool ,i dont see mandatory and optional fields in the XML and there is no documentation or support to test this WSDL.</p>
  
  <p>so how to we recognise what all mandatory and optional fields in the xml?</p>