I need to make an observer points analysis (3D analyst tool). I have a shapefile of 22 points, so I divided it in 2 layers of 11 each as the maximum points allowed is 16. However, as I launch the process, the program says:
ERROR 010155: Too many points. Maximum number allowed is 16. Failed to execute (ObserverPoints)
... But I have only 11!
Could anyone help me?