When you update this spreadsheet with new or different data, you won’t have to re-create the validation rule, but you will need to click Circle Invalid Data again. This tool would be useful to bring ...

Prevent duplicates before they happen by combining a simple function with data validation.

A common use of data validation is to create a drop-down list. Use it to restrict the type of data that users enter into an Excel cell.

Excel’s data validation feature offers an efficient way to perform a variety of tasks. This collection of techniques demonstrates several handy ways to put data validation to work.