Form 16 & form 26 as

Hello,

I work full time for IT company and get form 16 every year. And I fall in to the 30% tax slab. Parallely I have started doing training programs during weekends through another institute which provides me Form 16A. 

I have downloaded Form 26as from Trace and the section 194J is applied for the training program. A TDS of 10% gets applied for all the payments they have made throught the year.

I have started the filling process, I have selected ITR-1 and in the other income I have put the amount I have got from the training program and the correspoding TDS has also been entered . I have also entered my Salary details.

Now, I see that I am supposed to pay tax amount, is it because I fall under the 30 slab and the TDS that was deduced was only 10%? The difference of 20% is what I feel the system is showing. Can anyone please guide me on this. Thanks in advance