Skip navigation

Ensure unique entries with data validation rules

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

Resume Transcript Auto-Scroll
Skill Level Intermediate
5h 27m
Duration
13,953
Views
Show More Show Less
Skills covered in this course
Business Spreadsheets Excel for Mac

Continue Assessment

You started this assessment previously and didn't complete it. You can pick up where you left off, or start over.

Start Your Free Trial Now

Start your free trial now, and begin learning software, business and creative skills—anytime, anywhere—with video instruction from recognized industry experts.

Start Your Free Trial Now