&ZMAOMSYN

Identifies the system name from which the current AOM message came.

MVS provides a system name that is unique within a sysplex. An AOM message originating from an MVS system carries this system name in its internal message flow.

If AOMPRFSN is set to YES (either in the PROFILE command or as a SYSPARM), then the system name is available as a prefix to the message when displayed on a terminal. If the message is being processed by a MSGPROC, then this system variable indicates the system name.

Example: &ZMAOMSYN

&MSGREAD SET 
&GOTO .&ZMAOMSYN
 .
 .
 . 
.OS -* process MVS-sourced msg
 .
 .
 .

Note: If the message has no AOM data, &ZMAOMSYN is set to null.

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