Okla. Stat. tit. 12A, § 12A-2A-514: Waiver of lessee's objections

WAIVER OF LESSEE'S OBJECTIONS

(1) In rejecting goods, a lessee's failure to state a

particular defect that is ascertainable by reasonable inspection

precludes the lessee from relying on the defect to justify rejection

or to establish default:

(a) if, stated seasonably, the lessor or the supplier could

have cured it (Section 2A-213 of this title); or

(b) between merchants if the lessor or the supplier after

rejection has made a request in writing for a full and final written

statement of all defects on which the lessee proposes to rely.

(2) A lessee's failure to reserve rights when paying rent or

other consideration against documents precludes recovery of the

payment for defects apparent in the documents.