Your question is not clear.
If you are issuing a 1099-MISC to a vendor or subcontractor, you use your EIN. If you don't have one, use your personal SSN. (If you are self-employed, you are required to have an EIN only if you pay employees, but you can get one for free on the IRS web site and that will prevent you having to give your personal SSN to vendors and subcontractors.)
If you are reporting income received on a 1099-MISC, the payor must provide their EIN. If it is blank, call the payor. If they refuse to provide a tax number, then skip entering the 1099, but make sure you include the income under "other income not reported on a 1099". That way, if the IRS sends you a letter asking why you did not report some income, you can write back with proof that you did include the income, and enclosing a copy of the 1099 showing why you could not enter it in the software.
