The only defenses to an assessment in a suit to enforce the assessment are that:(1) the assessment exceeds the amount of the estimated assessment stated in the notice; or(2) notice of the hearing:(A) was not mailed, delivered, or published as required by Section 286.007; or(B) did not contain the information required by Section 286.007. Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
Texas Legal Code