I keep having this notification. I wish Sonos had more setting options in the app. More features more functionality. This however has been going on for a month with seemingly no fix.
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There was another post about this a while ago. Sonos asks you to disregard the message as it’s an error. (Trueplay can’t yet support inverted Eras though it’s supposed to be coming sometime.)
Hi
Welcome to the Sonos Community!
I am happy to confirm that TruePlay Tuning now supports the use of inverted Era 300s in a Home Theatre setup.
I hope this helps.
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