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, ...