Alerts not in alert inbox

Hello XI Experts,

I read several blogs regarding the problem with the messages in alert inbox but I didn't find the answer which would solve my problem. I have an integration process in which in exception branch I raise an alert which I would like to send to some users and also see it in my alert inbox. I've created an alert category, subscribed to it. When I test the alert with RSALERTTEST I receive the alert in my inbox. I see it also in ALERTDISP transaction. But the problem is when I want to test the alert using message which starts the integration process. I see in the log that the alert was triggered but I don't see any alert in my inbox. Does anybody have any idea where could be the problem?

Thanks,

Pavol Suba