Application ID
The “Application Id” is a text string that identifies the program in the computers uninstall information database. This value is needed in the finished MSI package so that the MSI can make a clean uninstall of the wrapped setup executable if the user or administrator chooses to uninstall the package.
Upgrade codes are a unique identifiers that tells the system which MSI packages that are different versions of the same program. If this is the first time you are building an MSI package for this program then you can let the wizard create an upgrade code for you. However, if you have built a package for an earlier version of the program then you should reuse that upgrade code.
Click next to go to the page where the program properties are set up.