A South Dakota Complaint is a legal document used to initiate a civil lawsuit in the state of South Dakota. It is filed by a plaintiff, who is the party initiating the lawsuit, and sets out the plaintiff's claims against a defendant, the party being sued. South Dakota Complaints typically include the names of the parties, the facts and allegations that form the basis of the lawsuit, and the relief the plaintiff is seeking. There are two types of South Dakota Complaints: a Complaint for Divorce and a Complaint for Breach of Contract. Both types must be properly formatted and signed by the plaintiff in order to be accepted for filing by a court.