When necessary, you can wrap the transport service into a customized service before assigning it to a routing notification. You can edit your wrapper service to incorporate additional operations before or after the transport delivers the message. For example, you can insert a post-processing or pre-processing service, or you can include some error handling operations after the transport service.

You can update the flow service to digitally sign a message before it is routed. Or, if you want to FTP an IDoc in EDI flat file format, you would insert the step pub.sap.idoc:encodeString. If the outbound data should be an XML document, you would use pub.sap.idoc:encode instead, or your own mapping service that creates the format of your choice.