I didn't get child tax credit on my tax retutn. I applied for ITIN for my 2 year old on feb 2016 month and I got it on last week of May 2016.( I applied for ITIN before filling tax return)

I had sent the following documents

1. 1040A form with ITIN number mentioned in it

2. Schedule 8812

3. W2

But now I just got the amount excluding Child tax credit. How

To get your child tax credit on your 2015 return, you had to apply for the ITIN in 2015 not in 2016. You may claim CTC on your 2016 return.