If a display is not allowed for a role, the behavior is slightly different according to the situation:
 

Display Scenario	Behavior
Tree	If the display is in a tree node definition, that node (and any child nodes) will not be added to the tree. There will be no error message. This means that the display for the top node of the tree must always be allowed for all roles.
Tab	If the display is in a tab definition, the tab will not be added to the window and there will be no error message.
GridPanel BorderPanel CardPanel	If the display is in a GridPanel, BorderLayout, or CardPanel, it will not be loaded into the layout and there will be no error message.
File->Open Applet Parameter Command Line	If the specified display is not allowed, we will open a blank display and popup an error.
Drill Down	If the display you are drilling down to is not allowed, a dialog will popup with an error and the drill down will not be performed.