(1)  If  the  lessee receives notification of a material or indefinite
delay or an allocation justified under Section 2-A-405, the  lessee  may
by written notification to the lessor as to any goods involved, and with
respect  to  all of the goods if under an installment lease contract the
value of the whole lease contract  is  substantially  impaired  (Section
2-A-510):
       (a) terminate the lease contract (Section 2-A-505(2)); or
       (b) except  in  a  finance  lease  that  is not a consumer lease,
           modify the lease contract by accepting the available quota in
           substitution, with due allowance from the  rent  payable  for
           the  balance of the lease term for the deficiency but without
           further right against the lessor.
  (2) If, after receipt of a notification from the lessor under  Section
2-A-405,  the  lessee  fails  so  to modify the lease agreement within a
reasonable time not exceeding thirty days,  the  lease  contract  lapses
with respect to any deliveries affected.
Structure New York Laws
Part 4 - Performance of Lease Contract: Repudiated, Substituted and Excused
2-A-401 - Insecurity: Adequate Assurance of Performance.
2-A-402 - Anticipatory Repudiation.
2-A-403 - Retraction of Anticipatory Repudiation.
2-A-404 - Substituted Performance.
2-A-405 - Excused Performance.