The remaining parts of the messages are described in the rest of this chapter. A facility code consists of two or more uppercase letters that indicate the reference facility to which the message refers. A facility can be a hardware device, a protocol, or a portion of the system software. A severity level code is a single digit from 0 to 7 that reflects the severity of the condition. The lower the number, the more serious the situation.
All mnemonics are all uppercase character strings.
A description text string describes the condition. Sometimes it contains detailed information about the event, including terminal port numbers, network addresses, or addresses that correspond to locations in the system memory address space.