1. That it does not appear to have been presented in the proper court as required by law;

2. The want of any requisite prescribed by Articles 21.02 and 21.21.

3. That it was not returned by a lawfully chosen or empaneled grand jury.

Acts 1965, 59th Leg., p. 317, ch. 722, Sec. 1, eff. Jan. 1, 1966.