Illinois Notice Of Motion affidavit Of Service is a document used to prove that legal documents have been served to the proper persons or entities. This document is typically used to notify all parties of a pending motion and to confirm that all parties have received notice of the motion. There are two types of Illinois Notice Of Motion affidavit Of Service: personal service and substituted service. Personal service is when a party is served in person by a process server or other qualified person, while substituted service is when a party is served by delivering the documents to a person of suitable age and discretion at the defendant's residence or place of business. Both types of service must be properly documented in an affidavit of service to prove that the documents were served.