; and (2) if the small business concern does not file a certification application before the end of the 1-year period beginning on the date of enactment of this Act, lose, at the end of such 1-year period, any self-certification of the small business concern as a small business concern owned and controlled by service-disabled veterans. (d) Rulemaking Not later than 180 days after the date of enactment of this Act, the Administrator shall promulgate regulations to carry out this section. 850. Payment of subcontractors Section 8(d)(13) of the Small Business Act ( 15 U.S.C. 637(d)(13) ) is amended— (1) in subparagraph (B)(i), by striking 90 days and inserting 30 days ; (2) in subparagraph (C)— (A) by striking contractor shall and inserting contractor— (i) shall ; (B) in clause (i), as so designated, by striking the period at the end and inserting ; and ; and (C) by adding at the end the following: (i) may enter or modify past performance information of the prime contractor in connection with the unjustified failure to make a full or timely payment to a subcontractor subject to this paragraph before or after close-out of the covered contract. . (3) in subparagraph (D), by striking subparagraph (E) and inserting subparagraph (F) ; (4) by redesignating subparagraph (E) as subparagraph (F)