If your 1099-R has UNKNOWN as the taxable amount, you probably have a CSA 1099-R. If you have not indicated that this is a CSA form, go back into TurboTax in the 1099-R section and enter your CSA 1099-R, making sure to indicate before you enter the form that it is a CSA 1099-R. Then leave the taxable amount box blank and TurboTax will guide you through the interview to determine the taxable amount. Make sure to delete the incorrect 1099-R
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