Hi all,

I am struggling with coding one condition: Do not allow the user to mark record if cell value appears in column more than once.

Here is what I have:

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It's column BA and DupCheck.

I posted this on another forum (http://www.mrexcel.com/forum/showthr...?t=567053) but am not getting any response.

I really need help!

Thank you,
Gos-C