Atichaar sutra explains the idea of "atichar" — minor transgressions that occur while one is observing the main vows (vratas). It lists several categories of small faults that can happen even when one is trying to keep the vows strictly, and it describes how they are perceived and atoned for in Jain discipline. In short, atichar are the small slips that can bind karma if not acknowledged and corrected.

Key points from the sutra:

• There are five types of atichaar described for each major vow, covering different aspects of conduct (physical faults, speech, possessions, etc.).
• Examples include harmful acts done under the cover of observing a vow, misreporting or deceit, theft or improper handling of others’ wealth, sensual or inappropriate behavior, and improper handling of belongings or persons.
• The text emphasizes recognizing these small faults, correcting them, and maintaining careful restraint even in day-to-day activities to reduce karmic bondage.

If you’d like, I can share a brief, simple outline of the five atichaar under each major vow, or provide the original wording as per the Jain scriptures. You can read more here