Outbound Error Processing via Workflow

Hi WF Experts..

Whenever I am trying to send an IDOC, if some error occur in the OutBound side, I want one fo my workflow to be triggered.

For inbound side we have a business object IDOCCOND_A and an event inputerroroccured associated with it that can be used as a triggering event for my workflow.

I am in search of a similar object.

Please help in this regard.