N.Y. Uniform Commercial Code § 2-307 (2026)

Section 2--307. Delivery in Single Lot or Several Lots.
  Unless otherwise agreed all goods called for by a contract for sale
must be tendered in a single delivery and payment is due only on such
tender but where the circumstances give either party the right to make
or demand delivery in lots the price if it can be apportioned may be
demanded for each lot.