Use Data Validation through 3 how-to topics, including creating dropdown lists, setting value range limits, and configuring input messages and error alerts.
How-to Index
| No. | Topic | Membership Requirement |
|---|---|---|
| 1 | 1. Create a dropdown list | Free |
| 2 | 2. Set a value range limit | Free |
| 3 | 3. Set input messages and error alerts | Free |
How-to Guide
1. Create a dropdown list
Entry path: Data tab → Data Validation
- Select the cell range where you want to create a dropdown list.
- Click Data Validation on the Data tab.
- Set the validation criteria.
- Select options such as Ignore blank and Apply these changes to all other cells with the same settings as needed.
- Click OK. When you select the cell again, the dropdown arrow appears.
Success Criteria
- Interface result: A dropdown arrow appears when the target cell is selected.
- Next action available: You can choose a preset option and write it into the cell.
Tips While Using
- Common mistake: Opening Data Validation before selecting the target range may apply the rule to the wrong cells.
- Environment note: If the cells are protected, you may not be able to change the rule.
2. Set a value range limit
Entry path: Data tab → Data Validation
- Select the cell range where input should be restricted.
- Open the Data Validation dialog.
- In the Allow list, choose a type such as whole number, decimal, date, or time.
- Enter the minimum and maximum values, or complete the matching condition fields.
- On the Error Alert tab, set the message shown when the rule is broken.
- Click OK to save the rule.
Success Criteria
- Interface result: The target cells keep the configured restriction rule.
- Next action available: Valid input is accepted, and invalid input triggers the configured prompt.
Tips While Using
- Common mistake: If the selected value type does not match the actual entry format, alerts may appear more often than expected.
- Environment note: In shared files, the rule is saved with the spreadsheet and continues to apply later.
3. Set input messages and error alerts
Entry path: Data Validation dialog → Input Message / Error Alert
- Open the Data Validation dialog.
- Switch to the Input Message tab and enter the title and message shown when the cell is selected.
- Switch to the Error Alert tab and set the alert style and message for invalid input.
- Click OK to save the settings.
- Return to the sheet and test both the selection prompt and the invalid-entry alert.
Success Criteria
- Interface result: An input message appears when the cell is selected, and an alert appears when invalid data is entered.
- Next action available: Users can revise their entries based on the prompt.
Tips While Using
- Common mistake: Setting only the rule without adding guidance text can make the sheet harder to understand.
- Environment note: These prompts are saved with the file and work well in shared templates.