The California court system uses forms. Form Name, Form ID, Revised Date, Fillable, Mandatory.This program will help you write a letter that formally requests the money you are owed. This is called a Demand Letter. Remember it is preformatted to meet Court requirements. Judicial Council Forms provide you with an easy "check-the-box" format and are available for many civil, family law and criminal cases. Be sure you name the Defendant correctly. Below is a demand letter template to use that can help you construct your own demand letter before you file a California small claims lawsuit.