The message indicates an error that disrupts system operations. To continue, the operator must reIPL the system or restart a major subsystem. This causes the audible alarm to be issued.

The message indicates that the operator must perform an action immediately. The message issuer could be in a wait state until the action is performed or the system needs the action as soon as possible to improve performance. The task waits for the operator to complete the action. This causes the audible alarm to be issued.

The message indicates that the operator must perform an action eventually. The task does not wait for the operator to complete the action.

If the task can determine when the operator has performed the action, the task should issue a DOM macro to delete the message when the action is complete.

The message indicates the status of a system task or of a hardware unit.

The message is issued as an immediate response to a system command. The response does not depend on another system action or task.

The message indicates the status of a job or job step.

The message is issued by an application or system program. Messages with this descriptor code are deleted when the job step that issued them ends.

The message appears in hardcopy before being queued to a console.

The message, which is one line of a group of one or more lines, is to be displayed out-of-line. If a message cannot be printed out-of-line because of the device being used, descriptor code 8 is ignored, and the message is printed in-line with the other messages.

The message is written in response to an operator's request for information by a DEVSERV, DISPLAY, TRACK, or MONITOR command.

The message is issued in response to a TRACK command.

The message indicates that the operator must perform an action eventually, and the action is important enough for the message to remain on the display screen until the action is completed. The task does not wait for the operator to complete the action. This causes the audible alarm to be issued.

Avoid using this descriptor code for non-critical messages because the display screen could become filled.

If the task can determine when the operator has performed the action, the task should issue a DOM macro to delete the message when the action is complete.

The message contains important information that must be displayed at a console, but does not require any action in response.

Indicates that this message was previously automated.