You do not use a transaction object to access data from a Web service data source. However, some Web services support or require a user ID and password, and other session-related properties like firewall settings. The WSConnection object can provide this information for your DataWindow connections.
You use an instance of the WSConnection object to connect to a Web service by calling the SetWSObject method.
For more information about setting properties for a Web service connection, see WSConnection and SetWSObject in the online Help.