New York Affirmation In Support of Request For Certificate of Default is a form used by a creditor or debt collector in New York to obtain a Certificate of Default from the court. The form is used to demonstrate that the creditor has taken the required steps to collect a debt from a debtor. It must be accompanied by a proof of service and proof of claim. The form is available in two versions: the short form, which is used when a debtor has not responded to the creditor's notice, and the long form, which is used when the debtor has responded to the notice. The form must be signed in the presence of a notary public to be valid.