It ok to affirm that the IRA/SEP/SIMPLE box is not checked. If it is not checked on the form, TurboTax will ask to be sure you have accidently not checked it.
As you know, your 403(b) is not an IRA/SEP/SIMPLE. Your 403(b) is an employer-sponsored retirement account. The difference between your plan and a 401(k), which also would not have any of these boxes checked, is that your retirement plan is for a tax-exempt employer.
TurboTax continues to ask several questions which may seem redundant but need to clarify the distribution is a Rollover and should not be taxed.
