Understanding and using RAS1 logs
When you open a z/OS® log such as RKLVLOG, you find a mix of status lines and numbered product messages.
You can find the messages with IDs in the problem determination guides for each monitoring agent. You can also determine the meaning of a message by entering the message number into an Internet search engine such as Google. The information that follows help you interpret the messages and status lines in a z/OS log.