How to find origin of events ?

[GOURLET Gilles]

Dear all,
 
I have big problem with an event (QMSM.created) that is raised twice when I
create one single object (here a PM/SM task).
I clearly see with the SWEL txn that the two events are raised at the same
time but I can not explain why. I checked all the event linkages (SWE2,
SWE3) without success.
Is there a way to find where events are raised ?
 
Any help would be appreciated.
 
Gilles.