There are some Policy XPress (PX) used to assign/revoke Provisioning Roles, the Provisioning Role is being revoked correctly but looking in the Tasks, there is an Event with fail but the parent Task has the status as Completed.
Identity Manager 14.x
The Response in the Advanced tab from the Policy XPress was changed.
The customer had changed the Advanced tab in their Policy XPress.
After restoring the values to default the Task finishes as Fail instead of Completed
Below is the screenshot with the default values for the Advanced tab in the Policy XPress