LED Code:
=IF(B6="","",Entered_LEDCODE)
VOUNO:
=IFERROR(INDEX(DB!A:A,AGGREGATE(15,6,ROW(FDDR[VOUNO])/(FDDR[LEDCODE]=Entered_LEDCODE),ROWS($1:1))),"")
Drag copyboth formulae down.
By the way, your thread title and post explanation are both very poor - both could have explained your problem much better.