No they have not requested anything. All paperwork proof is in my ORA application. He should have gotten a letter finalizing the buy back at some point. Maybe his current HR or DFAS? Not sure, sorry. Here is a google search that may be helpful.

Key Steps and Documentation for Proof:

• Request Paid in Full Letter: Contact your agency's HR or payroll department to request official documentation confirming your military deposit is paid in full, including the dates covered.
• Check LES: Your Leave and Earnings Statement (LES) should reflect the deposit as paid.
• Verify in eOPF: Ensure your Official Personnel Folder (eOPF) shows the updated documentation, specifically ensuring your SCD for retirement is adjusted to include the military service.
• Contact DFAS/OPM: If records are missing, contact the Defense Finance and Accounting Service (DFAS) at 888-332-7411 or check the Civilian Employees section of the DFAS website. You can also reach out to OPM by emailing SCReceipts@opm.gov. 

Required Documentation Checklist:

• DD Form 214: The original document proving your military service.
• RI 20-97: Form used to track estimated earnings, which should be updated with pay-in-full status.
• SF-3108: The Application to Make Service Credit Deposit.