After the Affidavit of Service is done, it must be filed with the Court. An Affidavit is a sworn statement made before a notary public which explains to the court why your request should be granted.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. A colloquial term for an affidavit or affirmation that includes legal citations and arguments. The statute now allows any person to submit an affirmation in lieu of an affidavit, "with the same force and effect. New York will now allow all involved in civil actions to submit an affirmation under penalty of perjury in lieu of an affidavit. Instructions in the Eastern District of New York, and in the Southern District of New York this Local. Your affidavit does not need to be lengthy as long as you include all the facts that you are relying on as evidence. An affidavit is a written document that includes detailed information about your situation and what you're asking the court to do. A formal affidavit is no longer required.