(a) The defined area is initially composed of the territory described by Section 2 of the Act enacting this chapter.(b) The boundaries and field notes contained in Section 2 of the Act enacting this chapter form a closure. A mistake made in the field notes or in copying the field notes in the legislative process does not affect:(1) the defined area's organization, existence, or validity;(2) the district's right to execute contracts or issue any type of bond or obligation for the purposes for which the defined area is created or to make payments under a contract or obligation or pay the principal of and interest on a bond;(3) the district's right to impose a tax in the defined area; or(4) the defined area's legality or operation. Added by Acts 2011, 82nd Leg., R.S., Ch. 1261 (S.B. 942), Sec. 1, eff. September 1, 2011.