34 C.F.R. § 668.209 – Uncorrected data adjustments.

(a) Eligibility. You may request an uncorrected data adjustment for your most recent cohort of borrowers, used to calculate your most recent official cohort default rate, if in response to your challenge under § 668.204(b), a data manager agreed correctly to change the data, but the changes are not reflected in your official cohort default rate.
(b) Deadlines for requesting an uncorrected data adjustment. You must send us a request for an uncorrected data adjustment, including all supporting documentation, within 30 days after you receive your loan record detail report from us.
(c) Determination. We recalculate your cohort default rate, based on the corrected data, and electronically correct the rate that is publicly released if we determine that—
1. (1) In response to your challenge under § 668.204(b), a data manager agreed to change the data;
2. (2) The changes described in paragraph (c)(1) of this section are not reflected in your official cohort default rate; and
3. (3) We agree that the data are incorrect.
  (Approved by the Office of Management and Budget under control number 1845-0022)
  (Authority:20 U.S.C. 1082, 1085, 1094, 1099c)