Thanks to the Diagnostic log level selector, the diagnostic log allows multiple log levels as explained in the documentation. In this tech tip we will review common usage of these levels.

• log error: For logging errors only (unexpected disconnections, license problems, etc.).


• log warn: For logging errors and warnings (missing fonts, depreciation and similar problems).


• log info: Default level, records important events (user logins and logouts, for example).


• log debug: verbose level, useful for the 4D Tech Support team when investigating a problem.


• log trace: the most verbose level, useful for 4D internal development teams when working on a bug.

You can read more about diagnostic logs and how to stop them in a previous tech tip.