Classification upload error "First column is required to be the key"
Hi, I hope someone can help me,
I am attempting to import a classification file and every time I try I get the following error message:
"First column is required to be the key"
The first column in my file is indeed the key so I don't understand what the issue is. I recall having this problem before and removing duplicated rows seemed to do the trick but I am at a loss here.
Can anyone suggest a solution?
Thanks
Daf