No you are not required to amend your tax return.
TurboTax does not include Form 1042-S. Form 1042-S does not need to filed with your income tax return.
Sometimes, this form is mailed out strictly for informational purposes and therefore does not need to be included on your return. This is often the case when Resident Aliens receive this form.
The significant items on the 1042-S form are Box 7 and Box 10. Box 7 is US Federal Tax Withheld and Box 10 is Withholding Credit. If both of those boxes are 0, then nothing was withheld and there is no withholding credit and the 1042-S form is just for your informational purposes.
