There is a BUG in this calculation in the software, and it is supposed to be fixed by this Friday, 26 Feb.
As long as your box 4 ( both n the software and on your actual W-2) is 6.2% of box 3, then you are OK.
You can ignore it in any case...it is just a misdirected, but "supposedly helpful" message that does not change anything in your file...
Ignore it and move on, or wait until Friday and check again then.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
