Hello,
Looking at the November tab on the attached you see I have a list of colors that are data validated from the 1st Tab, in a column A. I have a list like this I have to do every month. It is a lot longer and the types change.
I'm trying to make an error for a repeated word in a column. So if i'm going down the list in December and I try to select blue again I want an error or maybe have it set up in a way so the word doesn't get repeated.
Let me know your thoughts!
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