Are you entering a w-2? If so, is there any withholding in Box 17? If there is withholding, you need to get the tax ID # from whomever issued you the form. The issuer's contact phone number should be found on the form.
Utah Tax ID formatting requirements in TurboTax
The 14 digit state ID number (for Utah) should be formatted as 11 digits followed by wth with no hyphens. Example: 12345678901wth
If there is no Utah employer identification number on a form W-2 box 15, 1099-R box 13, 1099-MISC box 17, or any other 1099 form, your refund may be reduced or your tax due increased. Contact the employer or payer of the income to get the Utah ID number. From Utah.gov