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 if 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.
N.D. Cent. Code § 41-02-24
(2-307) Delivery in single lot or several lots
Known as the Uniform Commercial Code
The act spans §§ 41–41 (597 sections).
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.