Okla. Stat. tit. 42 § 150
Any person claiming a lien as aforesaid shall file in the office of the county clerk of the county in which the land or property is situated, a statement setting forth the amount claimed and the items thereof, as nearly as practicable, the names of the managers, lessees, sublessees, operators, mortgagees, trustees and beneficiaries under trusts, or owners, the contractor, the claimant and the legal description of the property, subject to such lien and verified by affidavit. Such statement shall be filed within forty-five (45) days after the date upon which such labor was last performed. Upon receipt of such lien statement, the clerk shall enter same against the tract index and in a record kept for that purpose, to be called the mechanics' lien journal. Except as provided herein, the provisions of Sections 92 through 96 and 141 through 147 of this title shall apply with reference to the liens herein created.
Okla. Stat. tit. 42, § 150