In the code example, the Body element encloses a document named LibraryStock.
<?xml version="1.0"?>
<Envelope xmlns:soap="http://www.w3.org/2001/12/soap-envelope" encodingStyle="http://www.w3.org/2001/12/soap-encoding">
<Header> ... ... </Header>
<Body> <LibraryStock symbol="Books"/> </Body>