At a glance

The maximum generation time is set to zero or a negative value.

What causes this error

The timetable generation has a configurable time limit. This error appears when that limit is set to zero or a negative number, which makes generation impossible.

How to fix it

Go to the generation settings and set a positive generation time limit (e.g. 60000 ms = 1 minute). Contact support if this value is not accessible in the UI.

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