48 C.F.R. § 326.606-3
(c) If the CO cannot verify from the offeror submission that the Indian Tribe(s) identified is either on the List of Federally Recognized Tribes or is an Alaska Native Corporation, the CO must allow the offeror to correct information submitted under HHSAR 352.226-7(b). The CO should make every effort to allow the offeror to correct the information. If the requirement is time sensitive the CO must specify to the offeror the time and date by which a response is required.