New York State W-9 Form - October 2018) department of the treasury internal revenue service request for taxpayer identification number and. Single payment vendor id request: 1/17) nys office of the state comptroller instructions for completing substitute. Special use vendor id request:
Single payment vendor id request: Special use vendor id request: October 2018) department of the treasury internal revenue service request for taxpayer identification number and. 1/17) nys office of the state comptroller instructions for completing substitute.