The Wisconsin FA-4120V Affidavit of Service is a legal document used to prove that a notice or document was given to a specific individual or entity. It is a sworn statement by the person who served the documents, attesting to the fact that the documents were served properly and in accordance with the instructions. The Wisconsin FA-4120V Affidavit of Service is commonly used in court cases, both civil and criminal, to prove that a defendant or other party was properly served with a summons or other legal documents. There are three types of Wisconsin FA-4120V Affidavits of Service: Personal Service, Substitute Service, and Service by Publication. Personal Service is when the documents are handed directly to the defendant or other party. Substitute Service is when the documents are given to someone else to deliver to the defendant or other party. Service by Publication is when the documents are published in a newspaper or other publication and the defendant or other party is notified of the documents.