Ind. Code § 8-6-2.1-29
(e) No suit to question the validity of the bonds issued for the special taxing district, or to prevent their issue, may be maintained after the date set for the sale of the bonds, and all bonds after that date are incontestable for any cause.
[Pre-Local Government Recodification Citation: 19-5-14-29.]
As added by Acts 1980, P.L.8, SEC.70. Amended by Acts 1980, P.L.73, SEC.1.