A Tennessee Certificate of Service Summons in an Adversary Proceeding — Certificate of Service is a document used in Tennessee to certify that a summons has been properly served on an individual or entity in an adversary proceeding. This document is used to prove that the party in question was given notice of the adversary proceeding, and that they have been served with the appropriate paperwork. There are two types of Tennessee Certificate of Service Summons in an Adversary Proceeding — Certificate of Service: personal service and service by mail. Personal service involves delivering the summons directly to the party, while service by mail involves sending the summons by certified mail to the party's last known address.