In the Style box, select the desired alert type.Check the Show error alert after invalid data is entered box (usually selected by default).To configure a custom error message, go to the Error Alert tab and define the following parameters: You click OK to enter the invalid value or Cancel to remove it from the cell. The most permissive alert type that only informs users about an invalid data entry. You click Yes to input the invalid entry, No to edit it, or Cancel to remove the entry. Warns users that the data is invalid, but does not prevent entering it. You click Retry to type a different value or Cancel to remove the entry. The strictest alert type that prevents users from entering invalid data. In addition to the input message, you can show one of the following error alerts when invalid data is entered in a cell. Enter the title and text of your message into the corresponding fields.Īs soon as the user selects the validated cell, the following message will show up:.Make sure the Show input message when cell is selected box is checked.If you want to display a message that explains to the user what data is allowed in a given cell, open the Input Message tab and do the following: With the validation rule configured, either click OK to close the Data Validation window or switch to another tab to add an input message or/and error alert. Formulas - allow to express more complex conditions like in this example.Īs an example, let's make a rule that restricts users to entering a whole number between 10:.Cell references - make a rule based on a value or formula in another cell.Values - type numbers in the criteria boxes like shown in the screenshot below.In the criteria, you can supply any of the following: On the Settings tab, define the validation criteria according to your needs. You can also open the Data Validation dialog box by pressing Alt > D > L, with each key pressed separately. Select one or more cells to validate, go to the Data tab > Data Tools group, and click the Data Validation button. To add data validation in Excel, perform the following steps. If the user types something different, Excel will show an error alert explaining what they have done wrong: Find incorrect entries in validated cells.įor instance, you can set up a rule that limits data entry to 4-digit numbers between 10.Show a warning message when incorrect data has been entered. Show an input message when the user selects a cell.Validate an entry based on another cell.Restrict entries to a selection from a drop-down list.Restrict dates and times outside a given range.Allow data entries of a specific length.Allow only numbers within a specified range.Allow only numeric or text values in a cell.Here are just a few examples of what Excel's data validation can do: Technically, you create a validation rule that controls what kind of data can be entered into a certain cell. #Mac excel data analysis add in how to
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