Yes, you should have a number in your tax forms for the State ID #. This would be the Ohio State Department of Revenue ID # that should be on your 1099-G. If you have not yet received this form, then you should not submit your return for processing. Please note that the IRS, nor States, have begun to accept returns for processing. The IRS has announced that they will begin this process on February 12th and most States are following suit with this date.
In prior, the Ohio State ID# for Unemployment was 31-1334373 and still should be. However, it is still best to wait to submit until all tax documents have been received.
Please also be aware of the enormous situation with respect to Ohio and 2020 Unemployment fraud. Ohio Unemployment Fraud Hotline
No. You do not need a number in box 10b of form 1099-G.
WendyN2 says yes, but she's talking about the box titled PAYER'S TIN.
You can also leave box 10a blank if there is no amount in box 11.