ยง 83.00 Contesting of validity of obligations; substantial compliance.
  a.  If  an  action,  suit  or  proceeding contesting the validity of the
  obligations authorized by such resolution or  certificate  is  commenced
  within  twenty  days  from  the  date of publication of such resolution,
  summary of such resolution or certificate together with such notice, the
  court in which such  action,  suit  or  proceeding  is  commenced  shall
  determine  whether or not such obligations were authorized for an object
  or purpose for which  the  municipality,  school  district  or  district
  corporation is authorized to expend money or the provisions of law which
  should have been complied with were substantially complied with.
b.  The  court  may  determine that the provisions of law which should
  have been complied with were substantially complied with if:
1. They authorized the aggregate amount of obligations  authorized  by
  such resolution or certificate.
2.  Such  resolution  was  adopted by the required vote of the finance
  board or such certificate was duly made by such chief fiscal officer.
3. Such resolution or the proposition for the expenditure of money for
  the object or purpose for which such resolution authorizes the  issuance
  of  obligations,  as  the  case  may  be, was adopted at the election or
  meeting, if any, to which it was submitted.
c.  Such  determination  may  be  arrived   at   notwithstanding   any
  irregularity or failure to observe a technicality in:
1. The form of such proposition, resolution or certificate.
2.  The notice of the election or meeting to which such proposition or
  resolution was submitted or of the meeting at which  the  finance  board
  adopted such resolution.
3. The time or manner of the service or publication of such notice.
4.  The  conduct  of  the  election, meeting or meetings at which such
  proposition or resolution was adopted.
5. The submission of such proposition more than once within  one  year
  or other shorter period than authorized by law.
6. Like matters in such proceedings.
Structure New York Laws
Article 2 - Local Indebtedness
Title 6 - Local Obligations: Estoppel From Contesting Validity Thereof
80.00 - Bond Resolution, or Note Resolution or Certificate, May Contain Estoppel Clause.
82.00 - Twenty Day Period of Limitation.
83.00 - Contesting of Validity of Obligations; Substantial Compliance.