N.Y. Crim. Proc. Law § 460.15

§ 460.15. Certificate granting leave to appeal to intermediate\n appellate court.\n 1. A certificate granting leave to appeal to an intermediate\nappellate court is an order of one judge or justice of the intermediate\nappellate court to which the appeal is sought to be taken granting such\npermission and certifying that the case involves questions of law or\nfact which ought to be reviewed by the intermediate appellate court.\n 2. An application for such a certificate must be made in a manner\ndetermined by the rules of the appellate division of the department in\nwhich such intermediate appellate court is located. Not more than one\napplication may be made for such a certificate.\n