Wisconsin Service of Summons and Complaint is a formal court document that is used to initiate a legal action in the state of Wisconsin. It is served by an individual or entity called a process server or sheriff to the defendant(s) identified in the document. The Summons and Complaint includes information about the plaintiff's claim, the defendant's legal rights, and the court's jurisdiction. The two main types of Wisconsin Service of Summons and Complaint are: 1. Personal Service: This is when the process server or sheriff physically serves the Summons and Complaint to the defendant. 2. Substitute Service: This is when the process server or sheriff leaves a copy of the Summons and Complaint at the defendant's residence or place of business with an adult over the age of 18 (not a party to the action). The process server or sheriff must also mail a copy of the Summons and Complaint to the defendant's last known address.