N.Y. Comp. Codes R. & Regs. tit. 2 § 6.3
All claims submitted to the State must contain a certification by or on behalf of the party submitting the claim to the effect that the claim is just, true and correct, that no part has been paid, except as stated therein, that the balance therein stated is actually due and owing, and that taxes from which the State is exempt are not included therein; provided that no certification shall be required where a claim is submitted through an invoice used in the vendor's normal course of business. Each certification must be signed by the claimant, or authorized representative thereof, whose title must be shown in the space provided therefor. On electronic claims, the certification must include a valid electronic signature in compliance with article III of the State Technology Law, the Electronic Signatures and Records Act.
N.Y. Comp. Codes R. & Regs. Tit. 2 § 6.3