In this article, you will learn how to apply data validation and protection rules in Excel to prevent data entry errors. Top experts in this article Selected by the community from 15 contributions.

When you get the messgae this value doesnt match the data validation, turn off data validation or use the other solutions in this guide.

Hello, i am creating a timesheet in excel. I have workplaces in drop down boxes, i already counted how many times each data has been used. So i have a column with the result of that counting, i ...

Validation Rules are very simple to implement and can save you and others hours of untangling the mess that incorrect data could cause. Setting up validations rules. Start by selecting the particular ...

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Data Validation is a feature in Excel that allows users to pick from a list of rules to limit the type of data that can be entered into a cell. Follow the steps below to create a drop-down list ...

When the Data Validation dialog box appears, select the Settings tab, then click the tiny arrow beside the Allow field box, and select Custom from the drop-down list. 7.

There’s no built-in duplicate rule for Excel’s Data Validation feature, but you can combine the feature with the COUNTIF() function to get the job done. To do so competently, you need to know ...