--- schema_version: "1" id: 7145b857a7200027e101dcdaef7350a4da954f6a5beeb7c8c0e712e1366f10da title: UiTelemetryNavTmEventLog collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/object_reference/sforce_api_objects_uitelemetrynavtmeventlog.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_uitelemetrynavtmeventlog.htm source_site: developer.salesforce.com content_type: documentation content_hash: 0428f204653ee020d244b5b7dbfcc2e74df5a3edf24cc2dad809f79a989f79d0 description: UI Telemetry Navigation Timing events capture network performance metrics related to page navigation. The event extends from the UI Telemetry Resource Timing Event and includes requests initiated with either the Fetch API or the XMLHttpRequest API. This object is available in API version 64.0 and later. --- # UiTelemetryNavTmEventLog UI Telemetry Navigation Timing events capture network performance metrics related to page navigation. The event extends from the [UI Telemetry Resource Timing Event](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_uitelemetryresourcetiming.htm "UI Telemetry Resource Timing events capture network performance metrics related to loading an application’s resources. The event includes requests initiated with either the Fetch API or the XMLHttpRequest API. This object is available in API version 61.0 and later.") and includes requests initiated with either the [Fetch API](https://fetch.spec.whatwg.org/) or the [XMLHttpRequest API](https://xhr.spec.whatwg.org/). This object is available in API version 64.0 and later. ![Note](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/images/icon_note.png) #### Note This object stores event data that's queryable from platform APIs. For event data stored in event log files, see [EventLogFile](https://developer.salesforce.com/docs/atlas.en-us.264.0.object_reference.meta/object_reference/sforce_api_objects_eventlogfile.htm). ![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)"). ## Supported Calls describeSObjects(), query() ## Special Access Rules To access this object, you must have the View Event Log Object Data user permission. ## Fields | Field | Details | | --- | --- | | AppName | Type string Properties Filter, Group, Nillable, Sort Description The name of the application that the user accessed. | | BrowserName | Type string Properties Filter, Group, Nillable, Sort Description The name of the browser that the user accessed. | | BrowserVersion | Type string Properties Filter, Group, Nillable, Sort Description The version of the browser that the user accessed in major.minor version format. Some browsers don’t provide a minor version. | | ClientGeolocation | Type string Properties Filter, Group, Nillable, Sort Description The geolocation of the client in the form of /. | | ClientIdentifier | Type string Properties Filter, Group, Nillable, Sort Description | | ClientIp | Type string Properties Filter, Group, Nillable, Sort 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. | | ConnectEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser establishes a connection to a server so that it can retrieve a resource. To calculate the Transport Control Protocol (TCP) handshake time, subtract the CONNECT\_START time from the CONNECT\_END time. | | ConnectStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds after the browser completes the Domain Name System (DNS) lookup and begins connecting to a server so that it can retrieve a resource. To calculate the Transport Control Protocol (TCP) handshake time, subtract the CONNECT\_START time from the CONNECT\_END time. | | ConnectionType | Type string Properties Filter, Group, Nillable, Sort Description The type of connection. | | DecodedBodySize | Type double Properties Filter, Nillable, Sort Description The size in octets of the HTTP message body after the removal of any applied content encoding. | | DeviceModel | Type string Properties Filter, Group, Nillable, Sort Description The name of the device model. | | DevicePlatform | Type string Properties Filter, Group, Nillable, Sort Description The type of application experience in name:experience:form format. | | DeviceSessionIdentifier | Type string Properties Filter, Group, Nillable, Sort 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. | | DomComplete | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s readyState property is set to complete. Indicates that the page and its subresources have finished loading. | | DomContentLoadedEventEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s DOMContentLoaded event handler completes. To calculate the processing time for the DOMContentLoaded event handler, subtract the DOM\_CONTENT\_LOADED\_EVENT\_START time from the DOM\_CONTENT\_LOADED\_EVENT\_END time. | | DomContentLoadedEventStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s DOMContentLoaded event handler starts. To calculate the processing time for the DOMContentLoaded event handler, subtract the DOM\_CONTENT\_LOADED\_EVENT\_START time from the DOM\_CONTENT\_LOADED\_EVENT\_END time. | | DomInteractive | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s readyState is set to interactive. Indicates that the page has finished loading, but subresources, such as images and scripts, are still loading. | | DomainLookupEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser completes a DNS lookup for a resource. To calculate the DNS lookup time, subtract the DOMAIN\_LOOKUP\_START time from the DOMAIN\_LOOKUP\_END time. | | DomainLookupStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser starts a DNS lookup for a resource. To calculate the DNS lookup time, subtract the DOMAIN\_LOOKUP\_START time from the DOMAIN\_LOOKUP\_END time. | | Duration | Type double Properties Filter, Nillable, Sort Description The total duration in milliseconds of the event from the START\_TIME to the LOAD\_EVENT\_END time. | | EncodedBodySize | Type double Properties Filter, Nillable, Sort Description The size in octets of the HTTP message body before the removal of any applied content encoding. | | FetchStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser starts to fetch a resource from the server, not including redirects. Occurs before the DNS lookup and the connection to the server is established. To calculate the total time used to fetch a resource without redirects, subtract the FETCH\_START time from the RESPONSE\_END time. | | FirstInterimResponseStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser receives the first byte of the interim 1xx response from the server. To calculate the time from when the browser sends a request to when it starts to receive an interim response, subtract the REQUEST\_START time from the FIRST\_INTERIM\_RESPONSE\_START time. | | InitiatorType | Type string Properties Filter, Group, Nillable, Sort Description The HTML element that initiates the resource load. | | LoadEventEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s load event handler completes. To calculate the processing time for the load event handler, subtract the LOAD\_EVENT\_START time from the LOAD\_EVENT\_END time. | | LoadEventStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s load event handler begins. To calculate the processing time for the load event handler, subtract the LOAD\_EVENT\_START time from the LOAD\_EVENT\_END time. | | LoginKey | Type string Properties Filter, Group, Nillable, Sort 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. | | MobileSdkAppType | Type string Properties Filter, Group, Nillable, Sort Description The mobile application type. | | MobileSdkVersion | Type string Properties Filter, Group, Nillable, Sort Description Mobile SDK version number. | | NavigationType | Type string Properties Filter, Group, Nillable, Sort Description The type of navigation timing data. Possible Values - navigate: a user interaction or a script initiated navigation. - reload: a reload initiated navigation. - back\_forward: navigation traverses the browser’s history. - prerender: a prerender hint initiated navigation. | | NextHopProtocol | Type string Properties Filter, Group, Nillable, Sort Description The Application-Layer Protocol Negotiation (ALPN) Protocol ID that fetches the resource. Possible Values http/0.9, http/1.0, h2, h2c, h3 | | OperatingSystemName | Type string Properties Filter, Group, Nillable, Sort Description The operating system name, derived from USER\_AGENT. | | OperatingSystemVersion | Type string Properties Filter, Group, Nillable, Sort Description The operating system version, derived from USER\_AGENT. | | PageContext | Type string Properties Filter, Group, Nillable, Sort Description The name of the component hosting the main content of the page. | | PageObjectIdentifier | Type string Properties Filter, Group, Nillable, Sort Description The unique object identifier of the event. | | PageObjectType | Type string Properties Filter, Group, Nillable, Sort Description The object type of the event. | | PageUrl | Type string Properties Filter, Group, Nillable, Sort Description The relative URL of the top-level Lightning Experience page that the user opened. The page can contain one or more Lightning components. Multiple record IDs can be associated with PAGE\_URL. | | RedirectCount | Type int Properties Filter, Group, Nillable, Sort Description The total number of redirects since the last non-redirect navigation in the current browsing context. | | RedirectEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser receives the last byte of the response of the final redirect. To calculate the total redirection time, subtract the REDIRECT\_START time from the REDIRECT\_END time. | | RedirectStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser starts to fetch a resource that initiates a redirect. To calculate the total redirection time, subtract the REDIRECT\_START time from the REDIRECT\_END time. | | RenderBlockingStatus | Type string Properties Filter, Group, Nillable, Sort Description The status that indicates whether the resource can block or delay the browser from rendering page content. | | RequestIdentifier | Type string Properties Filter, Group, Nillable, Sort 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. | | RequestStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser starts to request the resource from the server. To calculate the total request time, subtract the REQUEST\_START time from the RESPONSE\_START time. | | ResponseEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser receives the resource’s last byte or when the transport connection closes, whichever comes first. To calculate the total time used to fetch a resource without redirects, subtract the FETCH\_START time from the RESPONSE\_END time. | | ResponseStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser receives the first byte of the response from the server. To calculate the total request time, subtract the REQUEST\_START time from the RESPONSE\_START time. | | ResponseStatus | Type double Properties Filter, Nillable, Sort Description The HTTP response status code. | | SdkAppVersion | Type string Properties Filter, Group, Nillable, Sort Description The mobile SDK application version. | | SecureConnectionStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser begins the handshake process that secures the connection. | | ServerRequestIdentifier | Type string Properties Filter, Group, Nillable, Sort Description The request ID for the server request that’s used to find associated server logs. | | SessionKey | Type string Properties Filter, Group, Nillable, Sort Description The user’s unique session ID. You can 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 starts. | | StartTime | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the browser starts to fetch the resource, including redirects. | | Timestamp | Type dateTime Properties Filter, Nillable, Sort Description The access time of Salesforce services in GMT. | | TransferSize | Type double Properties Filter, Nillable, Sort Description The size in octets of the resource, including the response header and the response payload body. | | UiEventElapsedTime | Type double Properties Filter, Nillable, Sort Description The difference in milliseconds between when the event is logged and when the browser tab is opened. | | UiEventTimestamp | Type dateTime Properties Filter, Nillable, Sort Description The time at which this event occurs, measured in milliseconds. | | UiRootActivityIdentifier | Type string Properties Filter, Group, Nillable, Sort Description The ID of the root activity when the event occurs. | | UiThreadResponseDelay | Type double Properties Filter, Nillable, Sort Description The time in milliseconds from when the browser receives the response to when it executes the callback. This delay occurs if the main Javascript thread is busy when the response is received. | | UnloadEventEnd | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s unload event handler completes. To calculate the processing time for the unload event handler, subtract the UNLOAD\_EVENT\_START time from the UNLOAD\_EVENT\_END time. | | UnloadEventStart | Type double Properties Filter, Nillable, Sort Description The time in milliseconds when the page’s unload event handler starts. To calculate the processing time for the unload event handler, subtract the UNLOAD\_EVENT\_START time from the UNLOAD\_EVENT\_END time. | | Url | Type string Properties Filter, Group, Nillable, Sort Description The URL of the request. | | UserIdentifier | Type string Properties Filter, Group, Nillable, Sort Description The 15-character ID of the user accessing Salesforce services through the UI or API. | | UserType | Type string Properties Filter, Group, Nillable, Sort Description The category of user license of the user accessing Salesforce services through the UI or API. | | WorkerStart | Type double Properties Filter, Nillable, Sort Description If a service worker is installed, the time in milliseconds when the active service worker receives the fetch event. To measure the service worker processing time, subtract the WORKER\_START time from the FETCH\_START time. |