New York StatutesTitle 3 - (15-301 - 15-304) REQUIREMENTS FOR EFFECTIVENESS OR ENFORCEABILITY OF MODIFICATION OR DISCHARGE15-301 - When written agreement or other instrument cannot be changed by oral executory agreement, or discharged or terminated by oral executory agreement or o15-303 - Release in writing without consideration or seal.15-304 - Forfeiture and cancellation of oil, gas or mineral land leases.