Error ID descriptions

[Jon.Faldmo]

Is there a document out there that describes the error IDs we see in the logs. I'm hoping for more infomation that what is printed in the log. For example:

ID000062 metric 532047 not found

ID000228 Skip the node : 2049, nodeE.isAppAgentPresent is : true, appAgentNodes is : false

Why can't a metric be found?  why would a node be skipped? What is being skipped? etc.

[Jon.Faldmo]

The node.retention.period is set to 500.