Title 11, Chapter 2, Section 311
Options and cooperation respecting performance.
(1) An agreement for sale which is otherwise sufficiently definite (subsection (3) of Code Section 11-2-204) to be a contract is not made invalid by the fact that it leaves particulars of performance to be specified by one of the parties. Any such specification must be made in good faith and within limits set by commercial reasonableness.
(2) Unless otherwise agreed specifications relating to assortment of goods are at the buyer's option and except as otherwise provided in subsections (1)(c) and (3) of Code Section 11-2-319 specifications or arrangements relating to shipment are at the seller's option.
(3) Where such specification would materially affect the other
party's performance but is not seasonably made or where one party's
cooperation is necessary to the agreed performance of the other but
is not seasonably forthcoming, the other party in addition to all
(a) Is excused for any resulting delay in his own performance; and
(b) May also either proceed to perform in any reasonable manner or
after the time for a material part of his own performance treat
the failure to specify or to cooperate as a breach by failure to
deliver or accept the goods.