This carries the name of the configuration file referenced by a system-configuration-related notification. Since a device may have loaded several different configuration files over its history, through restores, scheduled config pushes, or manual loads, this name is what lets an admin pin an improper-command or apply-failure notification to the exact file that caused it, rather than just knowing a config file had a problem. For example, a notification carrying this as backup-config-20260801.txt tells the admin exactly which saved configuration file to inspect and correct before attempting to reapply it.