Exception handling in Data feeder class

Hi All,

I have written some code in the DATA class feeder.  there i am catching some exception and i am displaying the exception using the message manager.

So after catching the exception , its going for dump because , the mo_message , the attribute of the data class has NULL values ,

But i can able to display the exceptions in form and list feeder classes . because i have referred the data class in both form and list attributes .

So its getting the instance , but i need to display the exceptions in the data class, how to get the instance of the message interface.

Please share !

Thanks,

Pradeep.