ABAP Runtime 

To send a message using a proxy, you simply need to call an outbound proxy. On the inbound side, you can receive the message using an ABAP object interface.

• Trigger exceptions for application errors in synchronous and asynchronous cases (see: Troubleshooting)
• Determine whether the default values are to be used for parameters or whether initial fields are to be indicated as such (see: Processing Default and Initial Values).
• Use special Proxy Framework services to append attachments to a message, to query the payload, or to identify receivers in advance.