Hey there,
I have two sensors and so I am using two HM-ES-TX-WM. Because of my Hardware, I am forced to use different firmware versions. In my ccu2 everything is working fine, for gas meter and electricity meter. But when I add both tings and corresponding items (per files) to openhab, I get errors in the log:
2021-04-15 21:21:00.147 [INFO ] [rnal.type.HomematicTypeGeneratorImpl] - Multiple firmware versions for device type ‘HM-ES-TX-WM’ found (1.2, 2.5). Make sure, all devices of the same type have the same firmware version, otherwise you MAY have channel and/or datapoint errors in the logfile
2021-04-15 22:26:35.292 [WARN ] [ternal.handler.HomematicThingHandler] - Channel not found for datapoint ‘xxx:1#GAS_ENERGY_COUNTER’
How can I solve these errors? Everything is working fine in openhab3 two, same as in ccu2, but my log is wasted… and I would like to have a log, where I see the essential things quickly, and not these messages… 
After hours of searching in the web no idea…