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 ...

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 ...

Automated Data Entry in Excel. One way businesses can save time and money is using Excel spreadsheets as data tables in which to store customer information, inventory details or other important data.

This illustrated walk-through (with a demo worksheet) shows how easy it is to create a multi-column search solution using validation lists and conditional formatting.

In this article we will show you how to display multiple columns in a validation list in Excel. We will show you a method that can then be applied to your data.