In NY, when filling out forms for Petition of Probate, it reads the following: COMBINED VERIFICATION, OATH AND DESIGNATION [For use when petitioner is an individual] STATE OF NEW YORK )_______ COUNTY OF _________ ss.________

What is the ss? Is that social security number of the petitioner or something else?

Page 5. https://www.nycourts.gov/LegacyPDFS/FORMS/surrogates/pdfs/Probate.pdf