The Fiscal Service 210 Series forms are a series of the Bureau of the Fiscal Service forms used to designate specific individuals to perform specific disbursement-related functions. These forms include: _FS Form 210CO: Designation for Certifying Officer, _FS Form 210DA: Designation for Agent to Receive and Deliver Check, and_FS Form 210DEO: Designation for Secure Payment System (SPS) Data Entry Operator