The message indicates a change in the system status. It demands action by the operator at the console with master authority.

The message indicates a change in system status. It does not demand action; rather, it alerts the operator at the console with master authority to a condition that might require action.

This routing code is used for any message that indicates job status when the status is not requested specifically by an operator inquiry. It is also used to route processor and problem program messages to the system operator.

The message gives information about tape devices, such as the status of a tape unit or reel, the disposition of a tape reel, or a request to mount a tape.

The message gives information about direct access storage devices (DASD), such as the status of a direct access unit or volume, the disposition of a volume, or a request to mount a volume.

The message gives tape library information, such as a request by volume serial numbers for tapes for system or problem program use.

The message gives disk library information, such as a request by volume serial numbers for volumes for system or problem program use.

The message gives information about unit record equipment, such as a request to mount a printer train.

The message gives the status or disposition of teleprocessing equipment, such as a message that describes line errors.

The message gives information about security checking, such as a request for a password.

The message gives problem information for the system programmer, such as a system error, an uncorrectable I/O error, or information about system maintenance.

The message is intended for the problem programmer. This routing code is used when the program issuing the message cannot route the message to the programmer through a system output (SYSOUT) data set. The message appears in the job log.

The message gives information about emulation. (These message identifiers are not included in this document.)