This Form 1099-R is reporting a taxable direct rollover to a Roth IRA, not to a traditional IRA. If you requested that the plan make the direct rollover to a traditional IRA, contact the plan to obtain a corrected Form 1099-R showing $0 in box 2a. If the rollover was indeed to a Roth IRA, the rollover is taxable as shown in box 2a.
If you instead requested a direct rollover to a Roth IRA but mistakenly deposited the funds into a traditional IRA, the plan is unlikely to issue a corrected Form 1099-R but you should request one anyway. If they refuse to provide the correction, you'll can file a substitute Form 1099-R (Form 4852) showing $0 in box 2a and explaining that the deposit was made to a traditional IRA, not to a Roth IRA, and therefore nontaxable. Filing a substitute Form 1099-R will preclude you from e-filing.
Entering the Form 1099-R as described by DanaB27 will prevent TurboTax from including the box 2a taxable amount from Form 1040 line 5b, but the IRS is likely to question the omission of this taxable income from your tax return and issue to you a notice that you failed to claim some income. You'll then have to explain to the IRS at that time that the rollover was to a traditional IRA rather than to a Roth IRA and therefore nontaxable, despite what was reported on the Form 1099-R. This approach allows you to e-file and deal with the problem later.
