Lesson 'Chemistry' for group '11A': pinned room 'Science Lab' is not in the list of available rooms for this lesson.
Last updated: Mar 23, 2026
At a glance
The manually assigned room is not eligible for this lesson.
What causes this error
A lesson is pinned to a specific room, but that room is no longer in the list of eligible rooms for this lesson.
The most common scenario is regenerating/evaluating a timetable after room restrictions changed. If you updated which rooms are allowed for a lesson, or changed room capacity or type settings after the previous generation, the pinned room may no longer be valid.
Other causes:
- The room was manually removed from the lesson's eligible rooms list.
- The room's capacity or type was changed to make it ineligible for this lesson.
How to fix it
- Unpin the room — Open the timetable editor, find the lesson, and remove the room pin. The scheduler will assign an eligible room automatically. This is the simplest fix when regenerating after configuration changes.
- Add the room back — In the Lessons section, add the pinned room back to the list of eligible rooms for this lesson, then re-pin in the timetable editor.