At a glance

A rule for the maximum or minimum lessons per day exceeds the number of available periods.

What causes this error

The rule for minimum or maximum lessons per day for this group is set to a number greater than the total number of periods in the school day. You cannot schedule more lessons per day than there are periods.

How to fix it

Go to the class configuration for the affected group and reduce the value of the rule to at most the number of periods shown in the error.

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