Are there additional Door state available other than Closed/locked/open/Unlocked/Unknown?

In our Access control software we have following Control funtions along with the Access control functions like Momentary Access/Lock/ Unlock

When we receive these events in our Access control plugin, we could only update the Door status to any user-defined states or states other than Closed/open/locked/unlocked on the smart client?

You can define more states.

You can use the: (ACM plugin)

private static IEnumerable GetDoorStates(DoorStatus status)

To return all valid states from your plugin.