None existing z-wave node

Wonder if anyone can answer what has happened here.
I have lost connection with a z-wave smart plug. Checking the developer page I can see that it has taken a weird, not to say impossible route across my z-wave network :stuck_out_tongue_closed_eyes:
Node 161 does not exist. It has never existed. Highest number om my list of z-wave devices is 85.
So how can this happen?

P.S. I donā€™t need help getting the device reconnected. Just curious about what happened.

Itā€™s a known phenomenon. Iā€™ve also had it before, but no explanation. Please contact Athom support.

I have seen this behavour when there is devices with ā€œbadā€ zwave functionality. For example I had several Telldus Plug-in Switch Mini causing this kind of problems. Now I have retired all of them and do not have issues anymore.

I experience the same problem.
Had a Fibaro Wall Plug (node 44) that sometimes routed via a non-existent node no. 176 and sometimes additionally via another non-existent node no. 10. I deleted node 44 now and added a brand new Fibaro Wall Plug. (Canā€™t add back the Fibaro unit that had node number 44 so this is probably defective). Thought the problem was solved but now see in Homey Developer that my node 29 (Namron Z-Wave relay) reports the following route:
image

Any suggestions on how I should proceed to troubleshoot this. Is it the node with the problem that is the cause or could it be any of my nodes?
(I have 2 Telldus switches)

For some reason, the NodeID 29 (Namron Z-Wave relay) definitiv lost the connection, because it shows Unknown in the column Route.
You can try this out::
ā€“ Restart Homey or better disconnect it from the power supply for 10-15 minutes
ā€“ Disconnect the Namron relay from the power supply for a few seconds

If nothing helps, you will most likely have to remove the relay and add it again.
If adding the relay does not work, please follow this help tutorial:

However, please report the issue to Athom Support.