Duties of Conservator and Acknowledgment of Receipt of Handbook for Conservators. GC-350, Letters of Conservatorship.Tell the court that the other party received a summons or other legal papers in a civil case that were delivered to (served on) that party. Notice and Acknowledgment of Receipt. (form. FL-117. ) and a postage-paid return envelope addressed to me. Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). If you have any questions, please call the Contra Costa County Clerk-Recorder's Office at (925) 335-7900. After filing for divorce and serving your spouse, you must file a proof of service with the Court using form FL-115. Here is how to fill form FL-115. It serves both as proof of service and as a formal record that the receiving party has received the documents.