A SOAP request is an XML data structure generated by a SOAP toolkit that is sent
to a web service. The root element of this structure is named after the operation
and contains the values for the operation's parameters.
The root element of every request must contain:
A value for AWSAccessKeyId to authenticate the request
A request element, which contains the values for the operation's
parameters
The API Reference describes all of the Product Advertising API operations
and their parameters. The Product Advertising API WSDL shows how the operation
parameters appear in the XML request generated by your toolkit.