unique-distinct-dependent-lists1-three-columns

Hi Murthy

May I know which version of excel for the attach file : Test_unique-GK6 ans1.xlsm ?
I have download the file and my computer excel show =_xlfn. in the formulae.

When I check in website it say "An _xlfn. prefix is displayed in front of a formulae" is due to
"The Excel workbook contains a function that is not supported in the version of Excel that you are currently running."

Attach is the file screen shot.

Thank & Regard
Grace