10.431—What does OWCP do when an overpayment is identified?
         Before seeking to recover an overpayment or adjust benefits, OWCP will advise the beneficiary in writing that:
    
    
    
        
        (b) 
         A preliminary finding shows either that the individual was or was not at fault in the creation of the overpayment;
    
    
    
        
        (d) 
         He or she has the right to present evidence which challenges the fact or amount of the overpayment, and/or challenges the preliminary finding that he or she was at fault in the creation of the overpayment. He or she may also request that recovery of the overpayment be waived.