If TurboTax gives me two conflicting answers regarding taxable amount to be reported for a 1099-R annuity payment, what should I do?

[jamesrwolf417]

A 1099-R shows insurance company annuity of $2000. I entered $1600 as taxable (I previously recovered all but $400.) TurboTax next advised, using simplified method, taxable amount is $0.00. I left it at $1600 – but then the program said it should be $2000 (taxable amount on 1099-R). Can I get an answer from TurboTax?

[pk]

what does the 1099-R show as taxable income or does it  have a check mark in the box "Taxable amount not determined" ?

if it not determined then you have to allow TurboTax to determine the taxable amount.  Where is the $1600 coming from ? what $400 ?