New York Affidavit of Service of Papers After Commencement of Litigation is a legal document used to prove that papers were served to the defendant after a lawsuit has been filed. It is used to document that legal service of process occurred and to provide evidence to the court of the time and place of service. The New York Affidavit of Service of Papers After Commencement of Litigation can be of three types, namely: 1. Personal Service: This is a form of service where the papers are physically served to the defendant. 2. Substitute Service: This is a form of service where the papers are left with a person of suitable age and discretion at the defendant's home or place of business. 3. Constructive Service: This is a form of service where the papers are sent to the defendant by mail, as well as published in a newspaper. The affidavit must include the date of service, the manner of service, the name and address of the person served, and it must be signed and notarized.