Its necessary US social security number? HELP ASAP!!!?

my bf is filling out the fiancee visa application and we are confused about something. There's a part where is correspondent for the alien fiance [ in this case, me ] where i have to fill out about my US social security number. For what i know, this only exist in the USA cuz we don't use that in the DR. what can i do? should i leave it in blank? There's also a part next to that, where they question about if i have any A#? what this means? HeLp PLEASE

Answer:
Call the people whom you got the paper from.
go to your local INS office and they will thell you.....the only "for sure" way :)
a# is your green card number. Do you have that? Did you enter legally or illegally? I know when you come here to work or study they give you a social security card for it.
Stay in Mexico we dont want you here no ss# means you dont pay taxes and i support to many of you already
In the space where it asks for a Social Security number, write N/A. The SSN space is only for people who have previously been in the US on a student or work visa, etc. which allowed them to get a SSN.

In the space for the A#, you would also write in N/A (again, this space is for people who have previously had a US visa). You don't have an A# yet, but will be given one once USCIS receives your I-129F and processes it.
A# is your alien registration number if you entered into the United States before to live or work you would have one.
Your social security number you would if you entered to live or work in the United States before.
If you don't have one then just don't fill it out. Put N/A in the place to not leave it blank though. Meaning Non-Applicable.

The immigration information post by website user , MyTend.com not guarantee correctness

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