Bunch of view rebuilt messages for private views in server log: "Informational, rebuilding view - no container or index"

Hi admins,

we have a lot of messages in the server’s log like:

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Informational, rebuilding view - no container or index (reading /local/databasefilename.nsf private view note Title:‘0 · P-Sachbe20|P-Sachbe20|P-Sac’)

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As far as I know are these POFU views.

Is this sth to worry about?

thanks in advance for any help,

Uwe