If you have submitted your
return, you will need to wait until the federal return is fully processed
before amending. This FAQ will show you how to amend for 2017.
https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed
This FAQ will provide more
information on how to amend.
https://ttlc.intuit.com/questions/2566895-what-does-it-mean-to-amend-a-return
