Sorry I forgot for a minute you were not pursuing a case where he is just a derivative at your interview . No, the onus is on you to determine whether or not he is eligible, just as the onus is on any applicant to determine if they are eligible for the immigration benefit being sought.Thanks loads. That helped a lot to have an idea about my situation. Do you mean that the child will get any notification saying that "your application will not be considered" or something? I am asking this if we submit the AoS it involves a considerable expenditure, only to find out that the AoS will not be considered. Or will it be automatically deleted from the site, when the case get current? (I see it still as "completed" on the page when I check the site with my CN)
PS it will always “be considered” because only an interviewing officer can make a final determination. So if he has indeed aged out he would go through the entire process only to be denied at the interview.