Hi, i need to find duplicates in all sheets and result to be, "yes" or "no".
In "C" column i have numbers, and in "D" column i need the code for
duplicates.
If any number from "C" column is find in any sheet, the code to display in
"D", "yes" or "no".

Ex
C D
123 yes
321 no

Can this be done?
Thanks!