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Default In excel, how do I enter unique cell information in a column

I do not want to input duplicate data in any cell of the same column, in an
excel spreadsheet.
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Default In excel, how do I enter unique cell information in a column

Highlight your range,

In the Menu DataValidationUnder Allow: select CustomUnder Formula:
=COUNTIF($A$1:A1,A1)=1
click OK



"snowdog120" wrote:

I do not want to input duplicate data in any cell of the same column, in an
excel spreadsheet.

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