Homematic Binding: "Channel not found for datapoint" errors for definitely existing channels

[job (Joachim Boeddeker)]

It’s not the device not working, it’s just some devices are sometimes not correctly initialized.

I have 15 HM-CC-RT-DN Thermostats and 10 HM-TC-WM-W-EU Wall Thermostats. Almost every restart, up to three devices are not being initialized with the correct channels. Always different devices.

So, looking at the devices itself will not help, it is the initialization which is not working correctly all the time.

The problem occurs mostly with these thermostats, maybe because these have this massive amount of configuration parameters. But i have also seen this with HM-Sec-SCO door/window contacts. (Also not a single one.)

The single thing which helped a bit is delaying the rule engine on startup like i described there:

Cleaning up the startup process / renaming rules (windows possible)

I’ve run in some issues with the current startup process. Everything is starting at once which leads to several exceptions, errors and other problems. In my case the most annoying problem is the Homematic-Channel not found-problem. According to my opinion, a reason is the triggering of rules during startup which leads to timing problems and other race conditions which then lead to further problems after startup. I often read about moving or renaming the rules and copying back after startup, so…

But the problem is still there, it is just no longer that visible as it used to be.