The IXCSEND interface is used to send messages within the sysplex. A client uses IXCSEND to send a message containing a request to one or more servers for processing. (For information on how a server is defined to XCF, see Defining and starting a server.) A server uses IXCSEND to send a message containing the results of its processing back to the client. The client uses the IXCRECV interface to receive those results. (For information on using IXCRECV, see Using the IXCRECV macro.)