Unavailable period entry references teacher 'John Smith' which was not found.

Last updated: Mar 23, 2026

At a glance

An unavailability rule references a teacher or group that no longer exists.

What causes this error

You have defined unavailable periods (blocked time slots) for a teacher or a class group. That teacher or group has since been deleted or renamed, leaving an orphaned unavailability entry.

How to fix it

  1. Delete the stale entry — Go to the unavailable periods settings and remove the entry that references the missing resource.
  2. Restore the resource — Re-add the teacher or class group with the same name if the deletion was accidental.
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