Prevent Duplicate Entries in Excel (2 Simple Ways) 

If you are doing data entry in Excel and wondering how to stop Excel from allowing you to enter duplicate entries, this video will give you the answer.
In this video, I will show you two simple methods to prevent duplicate entries in Excel.
00:00 Intro
00:16 Prevent Duplicate Entries Using Data Validation
04:38 Prevent Duplicate Entries Using Conditional Formatting
While the Data Validation method would stop you from entering duplicate values in a column, the Conditional Formatting method would visually highlight and show you whenever you enter a value that is already present in the column.
Read the article - trumpexcel.com/prevent-duplic...
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