To do Alt + A V I on Mac in Excel, download and install Accelerator Keys, then press Option, followed by A, V, I.
Command: Circle Invalid Data
This is how to do Alt + A V I on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + A V I circle Invalid Data highlights cells that contain values violating their data validation rules. Red circles appear around invalid entries, making them easy to identify and correct.