Contesting the validity of court orders
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) An employee, retiree or person adversely affected by a court order who alleges that a court order is invalid must prove the invalidity of the court order by submitting to OPM a court order that—
(1) Declares invalid the court order submitted by the former spouse; or
(2) Sets aside the court order submitted by the former spouse.
(b) OPM must honor a court order acceptable for processing that appears to be valid and that the former spouse has certified is currently in force and has not been amended, superseded, or set aside, until the employee, separated employee, retiree, or person adversely affected by the court order submits to OPM a court order described in paragraph (a) of this section or, if issued before the retirement or death of the employee or separated employee, a court order acceptable for processing amending or superseding the court order submitted by the former spouse.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.