arc:catch

<arc:try>
<arc:call op="sysExecute">
  <arc:check attr="sys:error">
    <arc:throw code="myerror" description="Batch file could not be executed" details="[sys:error]"/>
  </arc:check>
</arc:call>
<arc:catch code="*">
  <arc:call op="appSendEmail"/>
</arc:catch>
</arc:try>

<arc:call op="...">
  <arc:throw code="myerror" description="thedescription" details="Other Details."/>
  <arc:catch code="myerror">
    <arc:set attr="arc:ecode" value="[_code]"/>
    <arc:set attr="arc:emessage" value="[_description]: [_details]"/>
    <arc:push/>
  </arc:catch>
</arc:call>

<arc:catch code="*">
  An exception occurred. Code: [_code], Message: [_description]
</arc:catch>