#9 error while backing up

[Anonymous]

Hi,

we are using reoback for remote backup of our databases.
We need just 1 backup a day, but our database is
constantly growing, so when backing up reoback says:

error:
file xyz.MID changed while we read it

Is this an error and the backup is useless ?
Is this a warning and the backup will work ?
Is this fixable ?

Thank you for fast reply