140 LUD changed two days but no online status change, what does it mean?

Hi;
I am a new one to forum, can you please explain the term LUD. Thanks and best regards. Good Luck.
 
AllaboutGC
It means they have received your RFE and opened teh case for you.
two days simply means receiving day and second day they generally update and email.
moral is nothing to worry!
 
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