Alerts: subscription to 'BPConfirmed' unsuccessful?

Question

Hello,
we have upgraded from CRM 4.0 to 5.0. After this, our custom alerts don't work anymore. There are dozens of good threads about alerts, but as far as I can see, we have done all the steps required. Still, the alerts don't work, and I fail to see why.
According to my debugging and troubleshooting, the basic problem is that our Z-class event listener does not react to the event 'BPConfirmed'.
I put a breakpoint into the constructor of the Z-class. The key statement is
  event_service->subscribe( event_name =
                                if_crm_ic_events_con=>gc_bpconfirmed
                            listener   = me          ).
By debugging, I see that the class subscribes successfully to the event 'BPConfirmed'.
Nevertheless, I also saw that when the event 'BPConfirmed' is actually triggered in
CL_CRM_IC_EVENT_SRV     METHOD     IF_CRM_IC_EVENT_SRV~RAISE
the key statement
            call method lv_listener->handle_event( event ).
is not executed for our Z-class. I went through the loop and saw that lv_listener never has the value of our Z-class. It looks as if the system would forget the subscription.
I also have a breakpoint in the method
IF_CRM_IC_EVENT_LISTENER~HANDLE_EVENT
of our Z-class. The program never stops there, so indeed it seems that the subscription is unsuccessful.
Why is the event handler method of our Z-class not called?
Regards,
Arto

Answer 1

Hello,
I found the cure.
Note 1050377 solves the problem.
Hope it helps someone else, too.