If there was no state tax withheld (in Box 5) of your 1099-NEC, then please leave Box 6 and Box 7 empty.
If there was state tax withheld (in Box 5) of your 1099-NEC, and there is no state identification number in Box 6, then you can use the identification number as shown in the Payer's ITIN number Box under the Payer's name.
