!--a11y-->
Accessing the Message ID 
The
message ID is a unique indicator that identifies a message. In the synchronous
case, the request and response messages have different IDs. The application
can use the ID if it needs to access the messages again at a later point (for
example, to query an
acknowledgment for
a message).
To access the message ID, use the method GET_MESSAGE_ID of the controller object:
...
1. Fetch a protocol instance for the protocol IF_WSPROTOCOL_MESSAGE_ID.
2. To have the system return the message ID after the sender has sent a request message or the receiver has received a request message, use the method GET_MESSAGE_ID of this instance. This returns the ID by using the parameter MESSAGE_ID of type SXMSGUID.
