While Exchange 2016 is still “New”, there are some warnings or errors you may encounter but they are not actually a problem on the server. Let’s look at the example below:
You might think the above warning is telling you something is wrong with the database, actually it’s more informational. While it will log this event a lot on your server, you can safely ignore it. Hopefully once the new features for the ESE are released these warnings will go away.
Hope it helps.