CFR›Title 5›Chapter I›Part 839›Subpart D›Subject Group Erroneous FERS ContainsSection 839.411CorpusDaily eCFRDisplayed edition2026-05-12Last updated2026-05-12 Sections 839.411 § 839.411 What can I elect if I was put in FERS by mistake? Previous Erroneous CSRS or CSRS Offset Erroneous CSRS or CSRS Offset