S.D. Codified Laws § 23-24A-13
Upon receipt of the officer's written request as provided in § 23-24A-12, the appropriate authorities having the prisoner in custody shall furnish the officer with a certificate stating the term of commitment under which the prisoner is being held, the time already served, the time remaining to be served on the sentence, the amount of good time earned, the time of parole eligibility of the prisoner, and any decisions of the state parole agency relating to the prisoner. Said authorities simultaneously shall furnish all other officers and appropriate courts in the receiving state who have lodged detainers against the prisoner with similar certificates and with notices informing them of the request for custody or availability and of the reasons therefor.
SDCL 23-24A-13