This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
SOAP-ENV is not a keyword and it is a prefix that is bound to http://schemas.xmlsoap.org/soap/envelope/. The xmlns attribute to the <Envelope> tag to give the SOAP-ENV prefix a qualified name associated with a namespace.