If you're using TurboTax Desktop and can't change the Yes to No directly on the Tax and Interest Deduction Worksheet (Mortgage Interest Limited Smart Worksheet section), follow the steps outlined by @DMarkM1 above and use the step-by-step mode to re-enter your 1098's.
If you had multiple 1098's (or a Mortgage Credit Certificate) this may be generating the error.
Here's more info on Entering Multiple 1098's.
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