Okla. Stat. tit. 12, § 2001

SCOPE OF THE OKLAHOMA PLEADING CODE The Oklahoma Pleading Code governs the procedure in the district courts of Oklahoma in all suits of a civil nature whether cognizable as cases at law or in equity except where a statute specifies a different procedure. It shall be construed to secure the just, speedy, and inexpensive determination of every action. The provisions of Sections 1 through 2027 of this title may be cited as the "Oklahoma Pleading Code". Section captions are part of this act.