Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.
Use dynamic arrays and tables for fast, scalable cascading drop-down lists in modern Excel.
Design is best, but when you're stuck with an existing data structure, it helps to know how to work around trouble. Susan Harkins explains. Excel sheets grow — sometimes by adding new functionality, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results