It Looks Like You May Need to Amend Your 2015 Return

TT display above message at the end of my entry of 2016 1099R dontaining a re-characterization from Roth to tIRA.  Details:
1. in 2015, i converted $14,000 from IRA to Roth.
2. in 2016 I recharacterized the entire conversion back to tIRA. Due to market changes, the amount actually moved to tIRA was $14,450.
Do I really need to amend any prior year's returns, and why?