Solved
Can and how can I do so this year ?
You can amend your 2014 return. it is too late to amend your 2012 return, however. You only have three years from the filing deadline to amend a tax return.
https://ttlc.intuit.com/questions/2589210-how-to-amend-change-or-correct-a-2014-return-in-turbotax
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