If the rollover is from a traditional IRA, the Form 1099-R from that IRA must have the IRA/SEP/SIMPLE box marked to indicate that the distribution is reportable on Form 1040 lines 4a/4b. If this box is not marked on the Form 1099-R provided by the payer, it indicates that the distribution is not from a traditional IRA.
Pension distributions include distributions from a 401(k), 403(b), 457(b) and the federal TSP. These are not IRAs.
Make sure that the IRA/SEP/SIMPLE box on TurboTax's 1099-R form is marked or unmarked in agreement with the Form 1099-R provided by the payer.