Don
The values in Column G are Text not Numbers
Select Column G
Goto the Data, Text to Columns Tab
Delimitered,
Next
Finish
I would also change H2: =IFERROR(VLOOKUP($G2,tt,2),"Not found")
Then copy down
You could also use: =IFERROR(VLOOKUP(VALUE($G2),tt,2),"Not found")
if you can't change Column G