The level at which VTAM® can suppress a message is designated by either the SUPP start option or the MODIFY SUPP command. If a message is at the designated level or at a lower level, it is not written to the console or to the program operator. Messages at higher levels, as well as messages that cannot be suppressed, continue to go to the console and the program operator.
The following suppression levels are defined by IBM®. If you design your own message suppression criteria, it is your responsibility to document any changes to the published message suppression levels. Suppression levels are listed from lowest to highest order.
Informational-level messages do not indicate error conditions and usually indicate that some VTAM processing has been started. These messages probably have little or no effect if omitted.
Warning-level messages indicate error conditions that do not cause commands to fail or to be rejected. These messages tell you that a problem exists, such as use of a command that is not valid or a condition in which a minor node cannot be activated. VTAM can continue to process other parts of the command or procedure.
Normal-level messages contain all VTAM completion messages. For example, these messages tell you that commands have completed processing successfully or that a configuration has been activated successfully.
Serious-level messages indicate error conditions that cause commands or procedures to fail. These messages tell you that commands must be re-entered or procedures must be re-initiated.