Okla. Stat. tit. 12A, § 12A-3-311

ACCORD AND SATISFACTION BY USE OF INSTRUMENT

(a) If a person against whom a claim is asserted proves that

(i)

that person in good faith tendered an instrument to the claimant as

full satisfaction of the claim, (ii) the amount of the claim was

unliquidated or subject to a bona fide dispute, and (iii) the

claimant obtained payment of the instrument, the following

subsections apply.

(b) Unless subsection (c) of this section applies, the claim is

discharged if the person against whom the claim is asserted proves

that the instrument or an accompanying written communication

contained a conspicuous statement to the effect that the instrument

was tendered as full satisfaction of the claim.

Oklahoma Statutes - Title 12A. Uniform Commercial Code Page 304

(c) Subject to subsection (d) of this section, a claim is not

discharged under subsection (b) of this section if either of the

following applies:

(1) The claimant, if an organization, proves that (i)

within a reasonable time before the tender, the

claimant sent a conspicuous statement to the person

against whom the claim is asserted that communications

concerning disputed debts, including an instrument

tendered as full satisfaction of a debt, are to be

sent to a designated person, office, or place, and

(ii) the instrument or accompanying communication was

not received by that designated person, office or

place; or

(2) The claimant, whether or not an organization, proves

that within ninety (90) days after payment of the

instrument, the claimant tendered repayment of the

amount of the instrument to the person against whom

the claim is asserted. This paragraph does not apply

if the claimant is an organization that sent a

statement complying with subparagraph (i) of paragraph

(1) of this subsection.

(d) A claim is discharged if the person against whom the claim

is asserted proves that within a reasonable time before collection

of the instrument was initiated, the claimant, or an agent of the

claimant having direct responsibility with respect to the disputed

obligation, knew that the instrument was tendered in full

satisfaction of the claim.