N.Y. C.P.L.R. 3022

Rule 3022. Remedy for defective verification. A defectively verified\npleading shall be treated as an unverified pleading. Where a pleading\nis served without a sufficient verification in a case where the adverse\nparty is entitled to a verified pleading, he may treat it as a nullity,\nprovided he gives notice with due diligence to the attorney of the\nadverse party that he elects so to do.\n