Okla. Stat. tit. 36, § 36-4019: Application and contract as entire contract in annuities

In an annuity or pure endowment contract, other than a

reversionary, survivorship or group annuity, there shall be a

provision that the contract shall constitute the entire contract

between the parties or, if a copy of the application is endorsed

upon or attached to the contract when issued, a provision that the

contract and the application therefor shall constitute the entire

contract between the parties.