N.Y. Comp. Codes R. & Regs. tit. 21, § 5900.3
(b) The records access officer shall insure that personnel:
(3) upon locating requested records, take one of the following actions:
(4) upon request for copies of records determined by the records access officer to be available for inspection:
(6) upon failure to locate requested records, the records access officer shall certify that: