Short reminder for myself
During development of my alsb projects i clone, rename, move and do all sorts of things to eventually end of with one correct list of projects with good naming convention.
Once in a while when i try to rename for example proxy services back to some old name i already used i get errors about the new name already exists, although i’m pretty sure it’s not in the console anymore.
Find the ear file with contains your (old) resource with the identifier you tried to use (i couldn’t find any unix command which would let me list the files in the ear, and after that let me search a string on them).
If you found the correct ear (view application.xml in the META-INF dir, the jav:display-name-elements contains your identifier).
Start wls and try to rename again, it should be fixed.