After the Affidavit of Service is done, it must be filed with the Court. An affidavit is a sworn statement of fact that can be used in a variety of legal proceedings, from bankruptcy cases to family and civil litigation matters.An affidavit is a legal document that takes the place of oral testimony in legal proceedings. Filing affidavits of service of the citation. Affidavits of service must be filed 2 or more business days before the court date. An affidavit of service, also sometimes called a proof of service affidavit, is a type of affidavit that relates to legal documents that are filed with a court. An affidavit is a sworn statement a person makes before a notary or officer of the court outside of the court asserting that certain facts are true. An affidavit is a written statement made under oath that is typically used in legal proceedings. Learn their purpose, when to use, and how to write. Emphasize training, experience and knowledge relevant to the type of crime named in the warrant.