Redesignation and recharacterization.
CFR · 2024-01-01 · US · Title 5
(a) (b) (c) (2) Upon receipt of a properly submitted recharacterization record or recharacterization request, the TSP record keeper will update the tax characterization of the erroneously characterized contribution. (3) Agency automatic (1%) contributions and agency matching contributions cannot be redesignated as Roth contributions or recharacterized as tax-exempt contributions. (4) There is no breakage associated with redesignation or recharacterization actions.
official document · source cfr-2024 · id 5:§ 1605.17