Yes, a TSP desiring a review of a settlement action taken by the Administrator of General Services may request a review by the Civilian Board of Contract Appeals (CBCA) or file a claim with the United States Court of Federal Claims (28 U.S.C. 1491 ).
Code of Federal Regulations
[65 FR 24569, Apr. 26, 2000, as amended at 74 FR 30476, June 26, 2009]