The situation that triggered the installation of the application: 1 = It was assigned, 2 = User Installed through Add / Remove ...

The situation that triggered the installation of the application:  
1 = It was assigned, 
2 = User Installed through Add / Remove Programs, 
3 = The application was already installed in the user's profile 
4 = Installed via file extension activation, 
5 = installed via clsid activation, 
6 = Forced upgrade of locally installed application at logon. 
7 = Installed via ProgId activation 
8 = The application was re-deployed