Yes, under 31 U.S.C. 3726, your agency is required to establish a prepayment audit program. Your agency must send a preliminary copy of your prepayment audit program to: General Services Administration, Office of Travel, Transportation and Asset Management (MT), 1800 F Street, NW., Washington, DC 20405.
Code of Federal Regulations
[74 FR 30476, June 26, 2009]