Get your taxes done using TurboTax

Then I would suggest you contact your employer and ask them for the State employer Tax ID number and a corrected W-2.  Some states use the federal employer tax ID number for state purposes.  So you may try that.  If you provide which state you're in, perhaps some folks here can tell you whether your state uses the same FEIN.  I'm in Calif, Calif has its unique employer State ID number from the state's Employment Development Department.  Good luck!