Okla. Stat. tit. 12, § 12-1148.15: Affidavit for eviction

The actions for unlawful entry and detainer, commonly known as

an eviction, standing alone or when joined with a claim for

collection of rent or damages to the premises, or both, shall be

commenced by filing an affidavit with the clerk of the court. This

affidavit is to be developed by the Oklahoma Bar Association using

plain and understandable language. The Administrative Office of the

Courts shall provide public access to the affidavit by providing a

link to the form on the Oklahoma State Courts Network (OSCN)

website.