N.Y. Comp. Codes R. & Regs. tit. 21, § 2430.6
(c) Upon receipt of a request for access to a record, the records access officer shall direct any review of the files necessary to locate the record requested. If the record can be located, the records access officer shall either:
(d) If any record is requested and cannot be located in the files, the records access officer shall certify either that: