# Application logfile ## Summary Application logfile provides visibility into application messages. Messages are generated during operation and can include information about events, warnings, or 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](/files/vQnrsCcUyA96BzuZ90KP) ## Notification alert level selection The Notification alert level control sets the minimum severity of the messages displayed in the Messages grid. Only messages with a severity level equal to or higher than the selected level are shown. * **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 meet the selected notification 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 about the message in a pop-up. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.fact-finder.com/docs/system-maintenance-and-security/system-information/application-logfile.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.