How to use Data Validation for Excel Cells Data validation feature in Excel lets a user control what can be entered into a cell or provide a predefined list of acceptable entries to eliminate ...

Use Excel data validation to prevent duplicate values in a column Your email has been sent Prevent duplicates before they happen by combining a simple function with data validation. Excel has ...

Image: zozzzzo/Adobe Stock Validating Microsoft Excel data is vital to prevent erroneous information. For instance, a phone number that’s not really a phone number is of no use to anyone. This ...