Unique list of values w/ VLOOKUP or INDEX/MATCH not working

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I am trying to use the aforementioned functions to crate a list of unique values by referencing a separate sheet. The source sheet contains a column of date values and a column of checkboxes which indicate unique dates. using either functions indicates #NO MATCHES which is incorrect. Please let me know how to make this work correctly.

 

Alejandra

Hello,

Your VLOOKUP formula is returning #NOMATCH because it's looking for the specific value 0.1. If you're searching for checked boxes, I'd recommend changing 0.1 to true. You're formulas would look something like this:

=VLOOKUP(true, {Range}, 2, false)

OR

=INDEX({Range2}, MATCH(true, {Range3}, 0))