Perhaps have your client check with the financial firm that created the form? Either there is a legitimate reason for that code that is not clear or perhaps simply an error? Either way, the financial firm is likely able to clarify. 

Youre sure its appearing as taxable income on the front of the 1040?  When I input a Code T, it doesnt show up as taxable.

put a code Q in box 7

Yes code T, distribution shows up on line 4a and 4b. I'm working with ProSeries Basic.

Thanks for your quick response

On 1099-R, it's code T. Do you suggest me to change it to code Q ? But IRS has code T, will it cause any problem ?

Thanks

following...... 

Changing to a Q will not cause a problem

"which he invested for more than 5 years."

That's not how the various 5-year rules are stated, though.

I recommend investopedia articles, such as:

https://www.investopedia.com/ask/answers/05/waitingperiodroth.asp

Once you confirm everything about this scenario is qualified, you would use the applicable code and not the code from the 1099-R. Remember that the issuer only knows about the distribution, really. They don't know the entire event that transpires. For instance, they won't know about indirect rollovers.

Got it. Thank you so much.