Did you perform any edits to Totalizer tags? To find out which tags are affected you can check for "Postevent failed" messages from the PI Snapshot Subsystem (see KI 173246).
In many cases a restart of the PI Totalizer Subsystem resolved the situation.
Yes, you are right
After I restarted the PI Totalizer Subsystem, I'm not getting this warning message
Thanks Ruhland for your help