Data Validation in Microsoft Excel allows users to control the type of data entered into the worksheet. It picks from a list of rules to limit the type of data that can be entered into a cell.

INDEX with XMATCH returns an item from a range or array according to the first or last match it finds. Like XLOOKUP, it works with vertical and horizontal datasets, can search in any direction, and ...

The Data Validation window that pops up allows you to set your criteria in many ways. For our example, choose Whole Number for Allow:, greater than or equal to for Data:, and -700 for Minimum:.

Susan Harkins shows you a quick method for removing validation rules for multiple ranges in Excel, at the same time.

I've got an Excel 97 worksheet in which I need to validate some cells. No problem, I'll just use Data->Validate, right? Wrong. The built in validation works well enough as long as the user doesn't ...