Okla. Stat. tit. 12A, § 12A-4A-301: Execution and execution date

EXECUTION AND EXECUTION DATE

(a) A payment order is "executed" by the receiving bank when it

issues a payment order intended to carry out the payment order

received by the bank. A payment order received by the beneficiary's

bank can be accepted but cannot be executed.

(b) "Execution date" of a payment order means the day on which

the receiving bank may properly issue a payment order in execution

of the sender's order. The execution date may be determined by

instruction of the sender but cannot be earlier than the day the

order is received and, unless otherwise determined, is the day the

order is received. If the sender's instruction states a payment

date, the execution date is the payment date or an earlier date on

which execution is reasonably necessary to allow payment to the

beneficiary on the payment date.