Not need for EB1a I-140. But need for I-485 later.

如果没有的话，对case会有影响么？
-Not affect your I-140, but you will provide it later for I-485 (USCIS will send you RFE for that after you file I-485).

另外，Form 140 表中SOC code 是什么，哪里可以查到？
先谢了。
-Standard Occupational Classification code for PERM. You do not need/have that code for EB1/NIW.