SDCL § 22-30A-16: Ignorance and honest claim of right as affirmative defenses to theft.

It is an affirmative defense to a prosecution for theft that the defendant:

(1) Was unaware that the property taken was that of another; or

(2) Acted under an honest and reasonable claim of right to the property involved or that the defendant had a right to acquire or dispose of the property as he or she did.