BPM Exception handling for RFC errors

Hi all
I have to handle the exception which would be like below:
com.sap.aii.af.ra.ms.api.DeliveryException: error while processing message to remote system:com.sap.aii.af.rfc.core.client.RfcClientException: could not get a client from JCO.Pool: com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed
I am trying to put Block step and things are not working fine. Can anyone please explain me the steps to trap the exception?
My scenario has synchronous call to RFC FM.
Rightnow i have inserted Exception branch in my Block step and put the send step to write the error file.  I have put the Synchronous SEND step as part of block. This is not working.
Help please??

Hello Samuel,
Just to close this thread and finish up my own search, where I met your discussion, here I'm quoting two experts of this forum:
"you cannot catch the exception's value in the XI "
(see posting from Michal Krawczyk, Jun 12, 2006, in thread catch the exception)
"The content of a fault message are not accessible inside a BPM."
(see posting from Bhavesh Kantilal, Oct 3, 2007, in thread Notify user about Exception in BPM)
Regards,
Dennis

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