Learn how to apply data validation and protection rules in Excel to ensure the quality and accuracy of your data analysis and reporting.

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 possible mistakes or errors.

An easy way to add error messages in Excel is using Data Validation. Create error messages in Excel for creating validations and restrictions in data tools.

Enable and configure the data validation settings. Make sure that the North American worksheet is selected and that cell B3 is selected. Select Data→Data Validation. In the Data Validation dialog box, ...

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

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 ...

In Excel, custom input or error messages explain the rules for each field to prevent data-entry errors. Here's how to set them up in a spreadsheet.

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.