The ApplicationPage wizard page configures the UDI Wizard application configuration file, which maintains the list of software to be installed. This file contains an entry for each Configuration Manager 2012 or Configuration Manager 2007 R3 application or program and package that was added using the UDI Wizard Designer.
This file has the same name as the UDI Wizard configuration file but with a .app extension. For example, if the UDI Wizard configuration file is named Config.xml, then the corresponding UDI Wizard application configuration file would be Config.xml.app. This file is the companion to the UDI Wizard configuration file.