S.D. Codified Laws § 22-7-9
Current with legislation signed by the governor on or before 3/6/2024
No prior conviction may be considered under either § 22-7-7 or 22-7-8 unless the defendant was, on such prior conviction, discharged from prison, jail, probation, or parole within fifteen years of the date of the commission of the principal offense. Moreover, only one prior conviction arising from the same transaction may be considered.
SDCL 22-7-9