Okla. Stat. tit. 12A, § 12A-2-508: Cure by Seller of Improper Tender or Delivery;

Replacement.

(1) Where any tender or delivery by the seller is rejected

because nonconforming and the time for performance has not yet

expired, the seller may seasonably notify the buyer of his intention

to cure and may then within the contract time make a conforming

delivery.

(2) Where the buyer rejects a nonconforming tender which the

seller had reasonable grounds to believe would be acceptable with or

without money allowance the seller may if he seasonably notifies the

buyer have a further reasonable time to substitute a conforming

tender.