57A-2-606. What constitutes acceptance of goods.
(1)Acceptance of goods occurs when the buyer
(a)After a reasonable opportunity to inspect the goods signifies to the seller that the goods are conforming or that he will take or retain them in spite of their nonconformity; or
(b)Fails to make an effective rejection (subsection (1) of §57A-2-602), but such acceptance does not occur until the buyer has had a reasonable opportunity to inspect them; or
(c)Does any act inconsistent with the seller's ownership; but if such act is wrongful as against the seller it is an acceptance only if ratified by him.
(2)Acceptance of a part of any commercial unit is acceptance of that entire unit.
Source: SL 1966, ch 150, §2-606; SDCL, §§57-7-11, 57-7-12.