Instructions▾. In 1, enter your name and the date you served the occupants. In 2, check the box that states how you delivered the Demand or Notice.Verify statements for legal matters and business transactions using our Illinois general affidavit form template. Download and complete Proof of Delivery forms from the Illinois Office of the Courts. 1. Defendant. that: Defendant: resides outside the state has gone out of the state cannot be found after diligent inquiry. Use this form to swear under oath in writing to facts that you personally know. An affidavit for service is a legal document confirming the delivery of court papers to a party involved in a legal proceeding. This article provides a comprehensive sample of an affidavit letter, guiding readers through the essential components and format. I did not attach a copy of an affidavit or proof of service of a Demand or Notice because: ☐ I cannot find or did not save my copy.