Okla. Stat. tit. 12A, § 12A-1-9-201: General effectiveness of security agreement

GENERAL EFFECTIVENESS OF SECURITY AGREEMENT

(a) Except as otherwise provided in this title, a security

agreement is effective according to its terms between the parties,

against purchasers of the collateral, and against creditors.

(b) A transaction subject to this article is subject to any

applicable rule of law which establishes a different rule for

consumers, and any other statute or regulation that regulates the

rates, charges, agreements and practices for loans, credit sales or

other extensions of credit.

(c) In case of conflict between this article and a rule of law,

statute, or regulation described in subsection (b) of this section,

the rule of law, statute, or regulation controls. Failure to comply

with a statute or regulation described in subsection (b) of this

section has only the effect the statute or regulation specifies.

(d) This article does not:

(1) validate any rate, charge, agreement, or practice that

violates a rule of law, statute, or regulation described in

subsection (b) of this section; or

(2) extend the application of the rule of law, statute, or

regulation to a transaction not otherwise subject to it.