Thank you Paul.
Yes, the Event Trace is ON.
The event JOBCODEUPDATE does exist in the Custom BO and I have defined a Parameter RECIPIENT for it too.
Debugging did help. I caught the message No Receiver Found. I looked up the error and came across some threads which discussed about doing a Instance Linkage. I don't see an entry for my particular Object, Event and Receiver Type.
So should I be adding a new Entry there? If so, what would be Receiver Type? WorkItem or EventItem?
pk