New York Consolidated Laws, Real Property Tax Law - RPT § 1160. Enforcement of tax liens

1. It shall be the duty of the enforcing officer to enforce annually all tax liens, in accordance with the applicable provisions of law, except as otherwise provided herein.  The failure of the enforcing officer to enforce such tax lien shall not impair the lien or prevent a sale or stay any other proceedings for its enforcement after the time specified.

2. All provisions with respect to the procedure for the enforcement of tax liens requiring acts to be done at or within or before specified times or dates, except provisions with respect to length of notice, shall be deemed directory and failure to take such action at or within the time specified shall not invalidate or otherwise affect such tax lien nor prevent the accruing of any interest or penalty imposed for the non-payment thereof, nor prevent or stay proceedings under this article for any of the remedies for collection thereof in this article provided, nor affect the title of the purchaser under such proceedings.