Is it due to a legal name change of your child?
No, is not about that.
Is your child working?
No, he's not currently working.
You and your child could have some inconveniences if you don't inform about a legal name change. So, just to be sure, have you changed your child's name?
Well, yes I actually have. Didn't thought it was that important.
You should always inform Social Security about any legal name change because if not it could delay both of you and your child tax refund, and cause some other inconveniences.
what other inconvenience could cause?
it could also prevent his wage from being posted correctly in his Social Security record, causing to lower his benefits in the future.
what if social security assigns a Social Security number for non-work purposes to my child?