Error Capturing

Hi,

We are trying to work on a ABAP Proxy Scenario, and we have a requirement to be able to come up with a scenario design, which can capture and application or system error that can be caused by the receiving system while processing the message.

The same is the requirement for the IDOC based interfaces. Is there a way this can be done, and if so how can we achieve the same.

Thanks for your replies in advance and i will surely give points to the helpful answers.

Thanks,

Karthik