That sounds odd. When you place the cursor over the field with the exclamation mark, do you get a tooltip with explanation of the error?
Yes. When I hover my mouse over the set on the lower left hand side of the screen, I get a notification that says "The field 'my_field_name' had an invalid filter."
I can create filters on other sheets, just not this one with a map view. The problem is that I'm trying to filter based on location and map views do this nicely.
Can you post a screen shot or the packaged workbook (twbx file)?
Was this solved? I am having the same issue.
You cannot create sets with Measures only with Dimensions. Since Lat & Long are Measures, you can't base a set off of them.
The way I had to fix this is when I selected the locations on the map and clicked on "Create Set", the different Measures & Dimensions came up in a window. I then deselected the Lat and Long. When you mouse over "Latitude" and "Longitude" an "X" will appear & you get rid of them that way.
Hope this helps.
Thanks, that solves the issue.