I accidentally managed to create two targets with the same name in PCNSCFG. The command line to remove one of them wouldn’t work because it was not a unique target name.
To fix this, I went into my AD Users area and refreshed the domain. Then, making sure “Advanced Features” was turned on under “View”, I navigated to “System” then “Password Change Notification Service”. It showed the list of the two targets and I could delete the incorrect one.
This was in a development environment. In a production system, you want to be careful about missing any password changes that happen any time you are configuring your PCNS service.
This forum post provided the guidance I needed: http://social.technet.microsoft.com/Forums/en/identitylifecyclemanager/t…