An administrative lawsuit may be filed in respect of an illegal disposition by or omission of an administrative agency, each by a person who has a legal interest in such disposition or omission. If there is a defect in the requirement for the filing of lawsuits, the administrative lawsuit filed would be dismissed without prejudice as an unlawful suit. Moreover, an administrative lawsuit (suit for revocation) shall be filed within 90 days of the date on which there is an awareness of the disposition, etc., and within 1 year of the date of the disposition, etc. Thus, the content of this section is intended to assist with the filing of administrative lawsuits and granting of relief by comprehensively providing information on statutes relating to administrative litigation and organizing the contents according to the procedure for filing administrative lawsuits.