Basic Customization > User Interface Customization > Adding Actions and Hooking Them Up in the UI > Tab Models > Objective > Limitations
  
Limitations
In order to get your tab to display and highlight correctly you must follow the following conventions
You must place your JSPs in a directory that exactly matches the name you gave to your main tab in Adding navigator tab. In that example the main tab name is “mytab”.
You must create a JSP whose name exactly matches the defaultActionName and whose directory exactly matches the defaultActionType you specified on the action model in Adding second level navigation links in navigator. In this example the JSP would be “mytab\list.jsp”.
You must name your JSP exactly the same as your action. In this example both are named “list”.