Okla. Stat. tit. 12, § 1148.15
The actions for unlawful entry and detainer 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 in substantially the following form with the clerk of the court: In the District Court, County of ____________________________,
State of Oklahoma. _____________________________________
Plaintiff
vs.
No. ___________ _____________________________________
Defendant
STATE OF OKLAHOMA) ss
COUNTY OF _______ )
AFFIDAVIT
____________________________, being duly sworn, deposes and says:
The defendant resides at _______________________________, in the above-named county, and defendant's mailing address is ______________ ___________________________________________________________________. The defendant is indebted to the plaintiff in the sum of $ _________ for rent and for the further sum of $ _________ for damages to the premises rented by the defendant; the plaintiff has demanded payment of said sum(s) but the defendant refused to pay the same and no part of the amount sued for herein has been paid,
and/or
the defendant is wrongfully in possession of certain real property described as ______________________________________________ ___________________________________________________________________; the plaintiff is entitled to possession thereof and has made demand on the defendant to vacate the premises, but the defendant refused to do so.
____________________
Subscribed and sworn to before me this _____ day of __________, 19__.
__________________________________
Notary Public (or Clerk of Judge)
Laws 1971, HB 1105, c. 339, § 6, eff. October 1, 1971.