The Application Undeployment Wizard removes a deployed application from the associated Appeon Server(s) and Web Server(s), including all DataWindows from the Appeon Server(s), all the Web or mobile application files from the Web Server(s), and all the Transaction Object mappings from AEM. This is the only way that an Appeon deployed application should be removed. Any other method may not fully remove the application, and may cause errors.