Asynchronus RFC exception handling

Hi,

I have scenario File-XI-RFC.I have created an RFC enabled FM in R/3 and raising an exception if some errors occurs.I want that exception should be visible in sxmb_moni when RFC raises that exception.I am not using

BPM.How can I use Fault message for this in my scenario.

Any help will be appericiated.

Thanx

Rekha