At a glance

The max lessons per day rule is higher than the number of usable time slots for this group.

What causes this error

The timeslot range for a group is determined by its earliest and latest allowed periods (MIN_TIMESLOT and MAX_TIMESLOT rules). If the maximum lessons per day exceeds this range, it is impossible to place that many lessons within the allowed time window.

How to fix it

For the affected group, either:

1. Increase the timeslot range — Adjust MIN_TIMESLOT and/or MAX_TIMESLOT rules so the range is at least as large as the MAX_PERIODS_DAY value.
2. Reduce MAX_PERIODS_DAY — Set it to at most the timeslot range value shown in the error.

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