CSRS limitations.
CFR · 2024-01-01 · US · Title 5
(a) A court order awarding a former spouse survivor annuity under CSRS is not a court order acceptable for processing unless the marriage terminated on or after May 7, 1985. (b) In the case of a retiree who retired under CSRS before May 7, 1985, a court order awarding a former spouse survivor annuity under CSRS is not a court order acceptable for processing unless the retiree was receiving a reduced annuity to provide a survivor annuity to benefit that spouse on May 7, 1985.
official document · source cfr-2024 · id 5:§ 838.802