Phantom Process is Orphened process.
Some times some processes will still running in the server even though you kill the actual process.
Some threads will be keep running without any source process they are called Phantom Process.
if you see the Directory called PH this folder caprures the log of phantom process.
If you are getting this error but please check the active process in the datastage server and kill them if they are running since very long time
In the transformer stage the order of the output links should be such that the dependant links should come after independent links. otherwise job will abort with message phantom error