It sounds to me you might have filed a Form 1099-INT last year.  In order to proceed without any errors, I would suggest you to remove the form from the program. 

To delete the Form 1099-INT in the TurboTax Premier online version, here are the steps:

• Sign in to your account, select Pick up where you left off
• Select My Account (top of the screen)click on the drop-down arrow
• Select Tools
• Under Other helpful links, choose to Delete a form
• Select Delete next to the Form 1099-INT and Continue with My Return