Use WebDispatch to specify the HTTP messages to which the XML broker responds. Typically, these originate from a button added to HTML forms by TApplyUpdatesButton.  

The TWebDispatch object that implements WebDispatch includes properties that let you specify the path portion of URLs to which the XML broker responds, as well as the types of messages it accepts (typically post messages). You can also use this property to disable the XML broker so that the Web dispatcher does not send it any HTTP messages. When the XML broker is disabled in this way, it can still provide XML data packets to an InternetExpress page producer, but any update messages must be handled by a Web action item. 

TWebModule 

TWebDispatcher 

TApplyUpdatesButton 

Using an XML Broker