I get the same messages every day.
I have 4 async replication tasks and get 4 emails at start time and 4 at end time.
The task in the GUI shows consistent for every volume.
I thought, the messages are produced because the volume gets inconsistent/unknown as soon as the task stops?!
I am getting 8 of these each day. That's why I posted a feature request a while ago, since planned interruptions of a volume replication isn't really an error, but necessary: