Data validation is like setting the group ... Select your database in Excel, and head to Home -> Editing -> Clear -> Clear ...

Use Excel data validation to prevent duplicate values ... Excel has built-in tools to expose and even delete duplicates, but they work on existing data after the fact. If you want to make sure ...

Clear all the Data Validation values for the targeted cell ... However, if you do this, The Data Validation feature will not work. Excel will not show you a warning message if the data you enter ...