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# Application logfile

## Summary

**Application logfile** shows messages generated during operation. These messages can include events, warnings, and errors.

The **Application logfile** is available as a tab on the [System information](/docs/system-maintenance-and-security/system-information/system-information.md) page.

![Application logfile tab](https://883583471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTV1CIVFU3DJKhWzkqLAG%2Fuploads%2Fgit-blob-f0ea6fbe63fba80913757d79b7253e7dc58718ba%2Fimage-298.png?alt=media)

## Notification alert level selection

The **Notification alert level** control sets the minimum severity shown in the **Messages** grid. Only messages at or above the selected level appear.

* **TRACE**: Provides very detailed information, often including step-by-step code execution. Typically used for in-depth debugging.
* **DEBUG**: Fine-grained informational events useful for debugging an application.
* **INFO**: Important events that show the application's progress at a coarse-grained level.
* **WARN**: Potentially harmful situations that might warrant attention but are not necessarily critical errors.
* **ERROR**: Error events that may still allow the application to continue running.

## Messages grid

The **Messages** grid displays application messages that match the selected alert level. Each row shows:

* **Level**: The severity of the message.
* **Timestamp**: The date and time when the message was generated.
* **Class name**: The application class or component that produced the message.
* **Message**: The text describing the event that occurred.
* **Detailed information**: Click the details icon to view additional information in a pop-up.


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