I'm in the process of setting up a Nagvis map with a lot of objects... and have hit what seems like a limit for the number of objects.
As I was editing the map, cloning one shape over and over and then moving the shape on the page, I got this error:
"The attribute 'icon' is not supported in objects of type 'global' on map minemap."
(the map's name is "minemap").
At that point, I was then unable to display the map, and I was worried that the data was lost in the bowels of Nagvis (with upwards of 240 objects on that map, this was a disheartening thought).
Then I tried exporting the map locally, and comparing the data in the map to other working maps. I found that the first object on each page is a global element with several properties. The "bad" map seemed to, somehow, have "icon" data within it, such that it didn't match the format of the global object for the "good" maps.
I deleted the bad map from Nagvis, edited the global object text by hand, and re-imported it. That worked!
Then I started editing again, figuring the other instance was an anomaly. Nope. Within two edits, the same problem occurred. Again, I repaired the issue and tried editing again. Same problem again.
I have over a thousand more objects to add to this map, so now I'm stuck, and hoping there is either a solution (some constructive answer on to how to deal with this) or verification that this is a lost cause (so I don't waste more time with it).