No matter what the court order is labeled or recites, the regulation setting up the defined term “court order acceptable for processing” was published on July 29, 1992.
While the lingo might not matter (because it seems the system accepted the 2003 court order as a COAP), the regulations might affect how the order relates to the annuity the plan provides, and whether your friend gets a “former spouse survivor annuity” (also a defined term in the regulations).
The regulations about survivor annuities date from May 13, 1985. Those regulations too affect the annuity the plan provides, and might affect how the order relates to the annuity the plan provides.
Those points recognized, it might be efficient for your friend to ask an Office of Personnel Management employee or agent what OPM believes are the nonretiree’s benefits.
While I imagine your friend doesn’t expect you to sort through the detailed regulations, I furnished the citations and hyperlinks because some BenefitsLink readers welcome an opportunity to read primary sources.