Big difference.
Code 1 is fingerprints used by FBI for background check.
Code 2 is index print + signature + photo used by uscis for Green Card production
Code 3 = code1+code 2.This means,uscis can ask you do code 1 and code 2 at the same time.
Good luck
RD Aug 22,2001
Approved Sep 15,2005
GC received Sep 20,2005
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