Okla. Stat. tit. 12A, § 12A-4-403: Customer's Right to Stop Payment; Burden of Proof of

Loss.

CUSTOMER'S RIGHT TO STOP PAYMENT; BURDEN OF PROOF OF LOSS

(a) A customer or any person authorized to draw on the account

if there is more than one person may stop payment of any item drawn

on the customer's account or close the account by an order to the

bank describing the item or account with reasonable certainty

received at a time and in a manner that affords the bank a

reasonable opportunity to act on it before any action by the bank

with respect to the item described in Section 4-303 of this title.

If the signature of more than one person is required to draw on an

account, any of these persons may stop payment or close the account.

(b) A stop-payment order is effective for six (6) months, but

it lapses after fourteen (14) calendar days if the original order

was oral and was not confirmed in a record within that period. A

stop-payment order may be renewed for additional six-month periods

by a record given to the bank within a period during which the stop-

payment order is effective.

(c) The burden of establishing the fact and amount of loss

resulting from the payment of an item contrary to a stop-payment

order or order to close an account is on the customer. The loss

from payment of an item contrary to a stop-payment order may include

damages for dishonor of subsequent items under Section 4-402 of this

title.