 After determining which eligibility requirements participation in a program requires , the recipient must also assure that individual program participant or group eligibility was correctly determined by keeping evidence of such compliance , such as maintaining documentation in participant files ( e.g. , copies of HIV / Aids diagnosis , copies of federal income tax returns , etc . ) . Furthermore , the recipient must assure that only eligible individuals or groups participated in the program by establishing strict controls of program funds to avoid non @-@ eligible persons from receiving the specific assistance . 
