Okla. Stat. tit. 11, § 11-21-112: Record regarding territory annexed or detached

When any territory is annexed to or detached from a

municipality, whether by ordinance or court order, the mayor shall

file and record a duly certified copy of the ordinance or court

order, together with an accurate map or plat of the territory, in

the office of the county clerk of the county in which the territory,

or the greater portion of it, is located and with the Ad Valorem

Division of the Oklahoma Tax Commission. The record in the office

of the county clerk shall be conclusive evidence of such annexation

or detachment.