This object is used to warn the user that any previous backup that they have taken may no longer be used to restore the configuration to this device. It is therefore imperative that the user takes a new backup. This object shall return true(1) if the user has taken a backup in the past and the current hardware configuration of the device does not match the configuration at the time of the previous backup. In such a case, the backup file will either contain commands that can not be executed on the current hardware or will not contain configuration data for additional hardware. The user needs either to take a new backup or to restore the original configuration. Note that if the user restores the original hardware configuration, this item shall (by definition) return to false(2).