hi,
i did fresh fedora 43 install and noticed that my MOTU m6 reports ALSA UCM error on all inputs and outputs but those inputs and outputs work just fine.
in some software it is difficult to choose correct input due to presence of this error in device name.
i did find #552 this report to be similar to mine. attaching full alsa info output here (it was requested in that report)
alsa-info.txt
please let me know if i you need any more information from me.