Recent log messages
The Recent log messages report is probably the most commonly used of the reports available in Drupal core. Any module is able to report its activity here in a standardized way, whether it is for error reporting or simply informational details.
Click on the Recent log messages link, and you'll see a report similar to this:
Due to the fact that any module can insert messages here, the display can be a little confusing. Each log entry has the following fields:
Type: This is defined by the module that recorded the log entry and is most often the module name.
Date: The date and precise time (not shown in the preceding screenshot to save space) of the recorded log entry.
Message: This field displays more detailed information associated with the log entry. This can be a truncated summary, and if you click on the message, you can often get more information.
User: If the message was generated from a logged in session, in which the user was logged in, this will show the user's name...
