How do I fix my HSA employer contribution amounts?

[CBN16]

The Turbotax software shows my Employer/payroll contributions as lower than they are.

My hard copy of my W-2 shows the Turbotax populated number as well as the corrected, higher number.

Turbotax does not allow me to edit the employer/payroll contribution numer. How can I get access to change the incorrect box-12 number on the TurboTax software to the corrected version present on my hard copy W-2?

[Opus 17]

There are many different items that can be in box 12 of a W-2, the only thing that is HSA contributions is code W.  If you have two items in box 12, both with code W, you need to get a corrected W-2 from your employer.  If the printed W-2 is different from what you entered in Turbotax, and if you can't manually change it in Turbotax, you will have to delete the W-2 and re-enter it manually.