This image shows how to delete a descriptor. The top half of the image shows the Applications -Navigator window from the JDeveloper. The lower half is the TopLink Mappings - Structure window. The lower half contains a logical tree of elements. The element MyProcess, Employee, ssn is selected in the lower window. The right click menu is open, and contains Map As and Generate Mapping Status Report. Map is selected and its sub menu is open. THe bottom element, Unmapped, is selected.