Often, people involved in court cases need more than just legal help. It's important that you understand what is happening to you and get the help you need.Proof of Service of Summons (POS-010) tells the court that you had a summons or other legal papers delivered to (served on) the other party in a case. POS-040 Proof of Service—Civil (Proof of Service) Page 1. At the time of service I was over 18 years of age and not a party to this action. The following is a list of some documents that may be recorded if they meet all requirements, and a description or definition of each document. This form is filed with the Court after the service is done. This form is called an Affidavit of Service. LawHelp Interactive is a website that helps you fill out legal documents for free. County of Contra Costa.