EXCEPTIONS.

(a) Except as provided by Subchapter D, Subchapter B does not apply to a payment made by a governmental entity, vendor, or subcontractor if:

(1) there is a bona fide dispute between the political subdivision and a vendor, contractor, subcontractor, or supplier about the goods delivered or the service performed that causes the payment to be late;

(2) there is a bona fide dispute between a vendor and a subcontractor or between a subcontractor and its supplier about the goods delivered or the service performed that causes the payment to be late;

(3) the terms of a federal contract, grant, regulation, or statute prevent the governmental entity from making a timely payment with federal funds; or

(4) the invoice is not mailed to the person to whom it is addressed in strict accordance with any instruction on the purchase order relating to the payment.

(b) This chapter does not affect Chapter 2253.

(c) For purposes of this chapter, a bona fide dispute with respect to a contract for the construction of a public work does not include an audit of the public work project that continues for more than 60 days after the date of the substantial completion of the project.