--- schema_version: "1" id: 11ccf12230b61fe7c44f5a65069e48fcdace538541ca6dce23f02f04b2bb78dc title: Lightning Logger Event Type collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/object_reference/sforce_api_objects_eventlogfile_lightninglogger.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_lightninglogger.htm source_site: developer.salesforce.com content_type: documentation content_hash: 98c6d988e2be732fe259ba8ebfc01044951112bcb789f65c32c0e9cac67b408d description: Lightning Logger events contain information from observed Lightning component logs. This event type is available in the EventLogFile object in API version 58.0 and later. --- # Lightning Logger Event Type Lightning Logger events contain information from observed Lightning component logs. This event type is available in the EventLogFile object in API version 58.0 and later. To enable Lightning Logger events, from Setup, in the Quick Find box, enter event, and then select **Event Monitoring Settings**. Turn on Lightning Logger Events. ![Note](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/images/icon_note.png) #### Note The browser sends Lightning Logger event logs to the server in batches. Batches are sent when the user interacts with the page and when the page closes or refreshes. If the user experiences connectivity issues or if their login session expires due to browser inactivity, any pending Lightning Logger event logs on the browser are erased. There isn’t a way to retrieve these lost logs. The limit for Lightning Logger events is 30,000 events per minute per organization. Burst capacity may support up to 45,000-50,000 events per minute, but this is not guaranteed. The MESSAGE field shows details about what's logged when the limit is hit. For details about event monitoring, see the [Trailhead Event Monitoring module](https://trailhead.salesforce.com/en/modules/event_monitoring/units/event_monitoring_intro "HTML (New Window)") or [REST API Developer’s Guide](https://developer.salesforce.com/docs/atlas.en-us.264.0.api_rest.meta/api_rest/using_resources_event_log_files.htm "HTML (New Window)"). ![Note](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/images/icon_note.png) #### Note Event Monitoring logs are a source of truth but are not durable. Data loss can occur during Salesforce site switches, instance refreshes, or unplanned outages. For more information, see [Using Event Monitoring](https://developer.salesforce.com/docs/atlas.en-us.264.0.api_rest.meta/api_rest/using_resources_event_log_files.htm "HTML (New Window)"). ## Fields

Field	Details
APP_NAME	Type String Description The name of the application the user accessed.
BROWSER_NAME	Type String Description The name of the browser that the user accessed. Example Chrome, IE, Safari, Gecko
BROWSER_VERSION	Type String Description The user’s browser version in `major.minor` format. Some browsers don’t provide a minor version.
CLIENT_GEO	Type String Description The geolocation of the client in the form of <Country>/<State\|Province>. Example United States/California
CLIENT_ID	Type String Description The API client ID.
CLIENT_IP	Type String Description The IP address of the client that’s using Salesforce services. A Salesforce internal IP, such as a login from AppExchange, is shown as “Salesforce.com IP”. Example `96.43.144.26`
CONNECTION_TYPE	Type String Description The type of connection. Possible Values `CDMA1x` `CDMA` `EDGE` `EVDO0` `EVDOA` `EVDOB` `GPRS` `HRPD` `HSDPA` `HSUPA` `LTE` `WIFI`
DEVICE_MODEL	Type String Description The name of the device model. Example iPad, iPhone
DEVICE_PLATFORM	Type String Description The type of application experience in name:experience:form format. Possible Values Name `APP_BUILDER` `CUSTOM` `S1` `SFX` Experience `BROWSER` `HYBRID` Form `DESKTOP` `PHONE` `TABLET`
DEVICE_SESSION_ID	Type Id Description The unique identifier of the user’s session based on page load time. When the user reloads a page, a new session is started. Example 321a1ddfaf924803a075f1e69fc87bc06f53ccd0
EVENT_TYPE	Type String Description The type of event. The value is always LightningLogger.
LOGIN_KEY	Type String Description The string that ties together all events in a user’s login session. It starts with a login event and ends with either a logout event or the user session expiring. Example GeJCsym5eyvtEK2I
MESSAGE	Type String Description The message passed to the `lightning/logger` `log()` method. The message can be a JSON object or a string. String length is limited to 4 KB (4096 characters). If you hit the logger limit, subsequent events are muted for a minute. During this time, the message field is replaced with this text: `Rate limiting hit for this organization.` Lightning Logger events resume when the limit resets in the next minute.
ORGANIZATION_ID	Type String Description The 15-character ID of the org. Example 00D000000000123
OS_NAME	Type String Description The operating system name, derived from the User Agent. Example Android, iOS, OSX, Windows
OS_VERSION	Type String Description The operating system version, derived from the User Agent.
PAGE_CONTEXT	Type String Description The name of the component hosting the main page content. Example clients:cardsContainer
PAGE_ENTITY_ID	Type Id Description The entity ID (if any) of the record being displayed. Example 0013000000I3zJAAAZ
PAGE_ENTITY_TYPE	Type String Description The entity type of the page being displayed. Example Task, contacts
PAGE_URL	Type String Description Relative URL of the top-level Lightning Experience or Salesforce mobile app page that the user opened. The page can contain one or more Lightning components. Multiple record IDs can be associated with PAGE_URL. Example /sObject/0064100000JXITSAA5/view
REQUEST_ID	Type String Description The unique ID of a single transaction. A transaction can contain one or more events. Each event in a given transaction has the same REQUEST_ID. Example 3nWgxWbDKWWDIk0FKfF5DV
SDK_APP_TYPE	Type String Description The mobile SDK application type. Possible Values `HYBRID` `HYBRIDLOCAL` `HYBRIDREMOTE` `NATIVE` `REACTNATIVE`
SDK_APP_VERSION	Type String Description The mobile SDK application version number. Example 5.0
SDK_VERSION	Type String Description The mobile SDK version number. Example 2.1.0
SEQUENCE	Type Number Description An auto-incremented sequence number of the current event since the session started.
SESSION_KEY	Type String Description The user’s unique session ID. Use this value to identify all events in Lightning Experience within a session. When the user logs out and logs in again, a new session is started. Example cdd09305cb6babf34059e27f70e47f1b11dec868
TIMESTAMP	Type String Description The access time of Salesforce services in GMT. Example 20130715233322.670
TIMESTAMP_DERIVED	Type DateTime Description The access time of Salesforce services in ISO8601-compatible format (YYYY-MM-DDTHH:MM:SS.sssZ). Example 2015-07-27T11:32:59.555Z. The timezone is GMT.
UI_EVENT_RELATIVE_TIMESTAMP	Type Number Description Difference in milliseconds between when the message was logged and when the browser tab was opened. Example 29322.23
UI_EVENT_TIMESTAMP	Type Number Description The time at which this event occurred, measured in milliseconds. Example 1479769912796
USER_ID	Type String Description The 15-character ID of the user accessing Salesforce services through the UI or API. Example 00530000009M943
USER_ID_DERIVED	Type Id Description The 18-character case-insensitive ID of the user who’s using Salesforce services through the UI or the API. Example 00590000000I1SNIA0
USER_TYPE	Type String Description The category of user license of the user accessing Salesforce services through the UI or API. Possible Values `A`: Automated Process `b`: High Volume Portal `C`: Customer Portal User `D`: External Who `F`: Self-Service `G`: Guest `L`: Package License Manager `N`: Salesforce to Salesforce `n`: CSN Only `O`: Power Custom `o`: Custom `P`: Partner `p`: Customer Portal Manager `S`: Standard `X`: Salesforce Administrator