# Delete a Subsystem

From an HPE window, select the Subsystem you wish to delete by highlighting it in the "Project Structure" list. Then click on the Subsystems menu and select Delete. Please note that when you delete a subsystem, everything under that subsystem will also be deleted. This means that if you are deleting a Low-level subsystem, all DES in the subsystem will also be deleted. If you are deleting an interface, the Low-level subsystem attached to it and all DES in the Low-level will also be deleted. A message box will popup warning you about this action.

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