There is character limit (20) on Last name field on Personal Info page. How can we get rid of it?

[mkumaran-online]

My last name as per SSN is more than 20 characters. But, I am unable to update the same in TurboTax due to the character length limitation.

[Bsch4477]

Your return will be fine if you drop letters from your name until accepted by the program. 

[DanP0428]

Just put in as much as you can.  The IRS only checks the first four letters.