My weekly spreadsheet audit is gone, and I haven't missed it once.

Duplicate entries may be valid — but when they aren’t, they can derail your summaries and totals. Use Excel’s Validation feature to reject duplicate entries. Duplicates aren’t always a bad thing — ...

Data validation in Excel is more than just dropdown lists—it’s a powerful safeguard that can prevent costly mistakes before they happen. From blocking duplicates to enforcing formats and date ranges, ...

If you see the error “This value doesn’t match the data validation restrictions defined for this cell” when entering a value in an Excel cell, the solutions ...