My step daughter has an appt for a SB-1 interview April 3rd and I'm starting to fill out the DS-117 form, anybody here familiar with this form? #8 is asking for a DHS "A" Number, where do I find this? I did find one that was on her Immigrant Data Summary Page that she got back in 2014 do I use this? And since my step daughter is under 10yrs old, does her mom sign for her? Any help would be appreciated.