I didnt put my old SSN on my petitions, how can I add that now?

[OHara 2]

Hi friends, 

 

I had a SSN long time ago when I came to the US with a J1 for few months and only used it in that time (more than 10 years ago). Now I filled my AOS and didn't remember this number (even went to the SS Office a couple of times before filling to get this number and they didn't want to give me before I adjust status [they said after I get my resident status to go there again with the documentation]). After I mailed everything, I was biking near to the office again in a random day and decided to walk in, talked to another lady and she said I was lucky and she was going to give my number. So she just looked in the system with my name and date of birth... grrr

Now how can I add this information / number to my process / forms? 

 

Thank you!!

[azblk 338]

it is not required