JCo Client Programming and Error Handling

Hi all,
I was wondering if anybody could help me out with some advice on error handling when writing code to send messages to SAP via a JCo Client, particularly IDocs.
I understand from my reading that IDocs are always sent asyncronously to the SAP system from JCo, using JCO.Client.send(). So it is possible (and I have some test code working to do this) to force an exception with say a malformed IDoc, and catch the exception in my code.
But due to the asyncronous nature of the send functionality for IDoc, I cannot see any way of getting back any "business level" exceptions (e.g. Order Number does not exist, Unknown Material, etc.)
So my question is, is it possible to receive any of these type of error messages when sending IDocs to an SAP system using JCo? Perhaps by setting up a JCo Server with the correct error/exception listeners to receive these messages - but are they even sent out in the way?
If not what is the process for handling them?
It is of course possible to look in the SAP system using txn WE02 and see the problem/error but that does not help me to propagate this back to the sending application or to maintain state alignment between the two apps.
Any advice much appreciated!!
Chris

Hi Anil,
you should check on those trheads:
<a href="https://www.sdn.sap.com/irj/sdn/thread?messageID=3104772&#3104772">https://www.sdn.sap.com/irj/sdn/thread?messageID=3104772&#3104772</a>
<a href="https://www.sdn.sap.com/irj/sdn/thread?messageID=579794&#579794">https://www.sdn.sap.com/irj/sdn/thread?messageID=579794&#579794</a>
Regards,
Gianluca Barile

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"Sabha" <[email protected]> wrote:
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"Matthew Shinn" <[email protected]> wrote in message
news:[email protected]..
Hi Albert,
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Hi all:
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Message was edited by:
durga kottapalli

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http://sap.ittoolbox.com/documents/popular-q-and-a/extending-a-basic-idoc-type-2358
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