&AOMSOS

A system variable that identifies the type of operating system that sourced this message.

This system variable contains a value identifying the operating system that sourced this message. The following values are possible:

OS: Sourced by z/OS, MSP, or VOS3
VM: Sourced by VM

Examples:

& IF &AOMSOS = VM &THEN &GOTO .VMPROC

Note: Because an AOMPROC can receive messages from other systems via an ISR link, the value in this system variable is important in a mixed operating system network.

More information:

&ZMAOMSOS