UCC Perfect Tender Rule

Under the UCC perfect tender rule, a seller must deliver goods that conform exactly to the contract terms. Any nonconformity, no matter how minor, constitutes a breach and permits the buyer to reject all or part of the goods. Two exceptions apply: (1) the seller may have a right to cure if the time for performance has not yet expired, and (2) in an installment contract, the buyer may reject an installment only if the defect substantially impairs the value of that installment or the entire contract.