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Ensure unique entries with data validation rules

Ensure unique entries with data validation rules: Excel 2016 Tips and Tricks
Ensure unique entries with data validation rules: Excel 2016 Tips and Tricks

To prevent duplicate entries in a range of cells, use the Data Validation feature found on the Data tab. Choose the Custom option and create a formula that tests each entry in the range to see that it appears only once in the range. If working with column P, for example, use this Data Validation formula: =COUNTIF(P:P,P1)=1.

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Skill Level Beginner
5h 51m
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Skills covered in this course
Business Spreadsheets Excel

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