Illinois Affidavit and Order For Service By Publication is a legal document used to give notice to a party in a legal matter that cannot be served with a summons through other methods. It is an affidavit signed by the party filing the suit, under oath, that states to the court that all reasonable efforts have been made to locate the defendant(s) without success. This document allows for service of process by publishing a notice in a newspaper or other public forum that outlines the lawsuit and provides the defendant(s) a specific amount of time to respond. There are two types of Illinois Affidavit and Order For Service By Publication: a standard Affidavit and Order For Service By Publication, and a simplified Affidavit and Order For Service By Publication. The standard version is used when the defendant is not known, or may not reside in Illinois, and requires more detailed information including the last known address and other identifying information. The simplified version of the document is used when the defendant is known to reside in Illinois, and requires less detailed information.