How to Fix Excel Data Validation Drop-Down Showing Wrong Values
Question details
The user needs to troubleshoot and correct a data validation drop-down list that displays unexpected or duplicate values.

- Product
- Excel 2010
- Device & OS
- Windows 10
- Scenario
- Using data validation drop-down lists where the source data is located on another worksheet or structured as an Excel table.
- Observed behavior
- The drop-down list fails to update automatically and displays the same date or an incorrect value instead of the expected source data.
Check your worksheet for hidden rows or manual calculation settings (Formulas > Calculation Options) that might prevent your drop-down list from updating in real time.
Verify and Correct the Data Validation Source Reference
Check the data validation settings to ensure the source range is accurately pointing to the intended cells on your worksheet.
When a drop-down list displays incorrect values, the most common cause is a broken or shifted source reference, especially if the source data is on a different worksheet.
Correcting the cell references directly in the Data Validation menu will instantly refresh the drop-down options.
Click on the cell that contains the malfunctioning drop-down list.
Navigate to the 'Data' tab on the Excel ribbon and click on 'Data Validation' in the Data Tools group.
In the Settings tab, look at the 'Source' box. Ensure the cell range correctly matches the location of your intended list items.
If the reference is wrong, clear the Source box, navigate to your source worksheet, and highlight the correct range. Click OK to save.

Update or Delete Items in the Source Table Properly
Manage drop-down entries directly within the Excel table so that the data validation list updates automatically and does not display gaps.
Fix and Manage Drop-Down Lists Easily with WPS Spreadsheet
WPS Spreadsheet provides a highly intuitive interface for data validation, ensuring your drop-down lists remain accurate and seamlessly update when you modify your source data.
- 1. Open Your Workbook: Launch WPS Spreadsheet and open the file containing the problematic drop-down list.
- 2. Select Data Validation: Highlight the cell, navigate to the Data tab on the top ribbon, and click on Data Validation.
- 3. Update Source Range: Under the Settings tab, ensure 'Allow' is set to 'List' and correctly re-select the source range from your worksheet.

Frequently Asked Questions
Why does my Excel drop-down list show blank spaces?
Blank spaces appear in drop-down lists if the source range contains empty cells. To fix this, remove the empty rows from your source data, or ensure the 'Ignore blank' option is checked in the Data Validation settings.
How can I automatically sort my drop-down list alphabetically?
Data validation lists display items in the exact order they appear in the source range. To sort the drop-down list, you must apply an A-Z sort to the original source data column using the Sort feature under the Data tab.
Can I reference a dynamic named range for my drop-down list?
Yes. You can use the OFFSET and COUNTA functions in the Name Manager to create a dynamic named range. Entering this named range in the Data Validation 'Source' field will ensure the drop-down automatically adjusts when you add or remove items.




