Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.

Learn how Excel IMPORTCSV refreshes linked CSV data, handles locale formats, and switches to IMPORTTEXT for semicolon delimiters.

Dropdowns are useful features that simplify data entry and enforce data validations in spreadsheet software. Creating a dropdown list is easy. And you might have done that already in Excel. But did ...