Trigger happy Oracle identity Manager - Part 3 - Delete User only works when defined as recovery task

One of the things not clearly described in the Oracle documentation is the triggering of processes and actions in the OIM. When you know how it works you can find the descriptions in the documentation supporting this functionality. But this is scattered over the documentation and needs trial and error testing to be user on how this works. This is due to the fact the documentation talks about "buttons that can be pressed" and the action that follows.
In the first post we discussed the start provisioning and the task triggers. In the second post we did a twist on this first post.
In this post the de-provision picture is complete and the failure trigger is explained.

One of the things not clearly described in the Oracle documentation is the triggering of processes and actions in the OIM. When you know how it works you can find the descriptions in the documentation supporting this functionality. But this is scattered over the documentation and needs trial and error testing to be user on how this works. This is due to the fact the documentation talks about "buttons that can be pressed" and the action that follows.

One of the "poorly" documented features of OIM is this tidbit for the task "Delete User". This is triggered with a deprovisioning, but only works when this task has been added as recovery task of the task "Create User".
The recovery task would be triggered when the "Create User" fails, that is clear, but why the delete only works when it has been added as a recovery task for the "Create User" is not clear to me.