SG - added wsse='http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd' for security section in header and aligned rest of the namespaces to the python example https://github.com/PayUMEA/payu-mea-code-examples-rpp-python.git
SG - added a dotnet example using a service reference