41 CFR § 102-118.605
What if a TSP disagrees with the Notice of Indebtedness?
June 9, 2020
If a TSP disagrees with an ordinary debt, as shown on a Notice of Indebtedness, it may:
(a) Inspect and copy the agency's records related to the claim;
(b) Seek administrative review by the GSA Audit Division of the claim decision; and/or
(c) Enter a written agreement for the payment of the claims.