Do you mean document number for New York filers? If so, this number is an 8 or 10 digit alphanumeric number located on the lower right corner of your license, permit or non-driver ID, or on the back if it was produced after January 28, 2014. The document number begins after 'IDUSA'. Do not include IDUSA as part of the document number.
Please see FAQ below for instructions on how to identify your document number.
https://ttlc.intuit.com/replies/5624473
