After you have successfully completed the installation using SAPinst, the file usagetype.properties remains in the system. This file should exist only temporarily for the time period in which the CTC is called by SAPinst without dialogs. After you have completed this installation step, the file is no longer required.

This file is used to exchange information, such as the logon data of all of the user IDs that were created or changed by the installer. The passwords are subject to only a very weak encryption in the file. This was appropriate and sufficient for a very short existence. However, if the file remains on the computer for a longer period of time, it is a security problem if the passwords were not changed again after the installation.