How to create and customize data validation rules in Google Sheets?

To create and customize data validation rules in Google Sheets, you can follow these steps:

  1. Open a Google Sheets document.
  2. Select the cell or range of cells where you want to apply the data validation rules.
  3. Go to the "Data" menu and select "Data validation." A dialog box will appear.
  4. In the data validation dialog box, you can choose the type of data validation you want to apply from the "Criteria" drop-down menu. There are several options available, such as "List of items," "Number," "Date," etc.
  5. Based on the selected criteria, you can then configure the validation rules.
  • For example, if you choose "List of items" as the criteria, you can specify the items in the "List of items" box separated by commas. This will create a drop-down list with the specified items in the selected cell(s).

  • If you choose "Number" as the criteria, you can set minimum and/or maximum values, specify whether the number should be whole or decimal, etc.

  1. There are additional options you can customize, such as showing a warning or rejecting input that doesn't meet the validation criteria.
  2. After customizing the validation rules, click "Save" to apply the data validation to the selected cell(s).
  3. You can now test the data validation by entering or selecting data in the cells. If the entered data doesn't meet the validation rules, it will either show a warning or reject the input based on your chosen options.

You can modify or remove the data validation rules by selecting the cell(s), going to the "Data" menu, and choosing "Data validation" again. In the data validation dialog box, you can make changes to the existing rules or click "Remove validation" to remove the validation rules entirely.