Okla. Stat. tit. 12A, § 12A-4A-205

ERRONEOUS PAYMENT ORDERS

(a) If an accepted payment order was transmitted pursuant to a

security procedure for the detection of error and the payment order

(i) erroneously instructed payment to a beneficiary not intended by

the sender, (ii) erroneously instructed payment in an amount greater

than the amount intended by the sender, or (iii) was an erroneously

transmitted duplicate of a payment order previously sent by the

sender, the following rules apply:

(1) If the sender proves that the sender or a person acting on

behalf of the sender pursuant to Section 14 of this act complied

with the security procedure and that the error would have been

detected if the receiving bank had also complied, the sender is not

obliged to pay the order to the extent stated in paragraphs (2) and

(3) of this subsection.

(2) If the funds transfer is completed on the basis of an

erroneous payment order described in clause (i) or (iii) of

subsection (a) of this section, the sender is not obliged to pay the

order and the receiving bank is entitled to recover from the

beneficiary any amount paid to the beneficiary to the extent allowed

by the law governing mistake and restitution.

(3) If the funds transfer is completed on the basis of a

payment order described in clause (ii) of subsection (a) of this

section, the sender is not obliged to pay the order to the extent

the amount received by the beneficiary is greater than the amount

intended by the sender. In that case, the receiving bank is

entitled to recover from the beneficiary the excess amount received

to the extent allowed by the law governing mistake and restitution.

(b) If (i) the sender of an erroneous payment order described

in subsection (a) of this section is not obliged to pay all or part

Oklahoma Statutes - Title 12A. Uniform Commercial Code Page 361

of the order, and (ii) the sender receives notification from the

receiving bank that the order was accepted by the bank or that the

sender's account was debited with respect to the order, the sender

has a duty to exercise ordinary care, on the basis of information

available to the sender, to discover the error with respect to the

order and to advise the bank of the relevant facts within a

reasonable time, not exceeding ninety (90) days, after the bank's

notification was received by the sender. If the bank proves that

the sender failed to perform that duty, the sender is liable to the

bank for the loss the bank proves it incurred as a result of the

failure, but the liability of the sender may not exceed the amount

of the sender's order.

(c) This section applies to amendments to payment orders to the

same extent it applies to payment orders.