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# Querying RUM logs

Real User Monitoring SDKs send logs to the Coralogix Ingress API using a predefined JSON format that maintains a consistent structure across all logs. This uniformity makes it easy to query RUM logs with [DataPrime](https://coralogix.com/docs/dataprime/introduction/welcome-to-the-dataprime-reference.md), as all log types share the same overarching schema.

Each RUM log includes a common set of fields applicable to all event types. In addition, each specific event type has its own nested object containing fields unique to that event.

Currently, based on the enabled instrumentation, both browser and mobile SDKs can generate the following types of events:

* `resources`
* `error`
* `network-request`
* `user-interaction`
* `longtask`
* `log`
* `web-vitals`
* `dom`
* `custom-measurement`
* `screenshot`

## Where RUM data is stored[​](#where-rum-data-is-stored "Direct link to Where RUM data is stored")

RUM data is stored in its own dataset, `default/rum.events`. Every field path on this page is written as it appears in that dataset.

RUM data used to be written into `default/logs` alongside your application logs, and every RUM field carried a `cx_rum.` prefix. Accounts move to `default/rum.events` one at a time, so both layouts are in use today. When an account moves, the prefix is dropped: `cx_rum.event_context.type` becomes `event_context.type`.

To check which applies to your account, open the [dataset selector](https://coralogix.com/docs/user-guides/data_exploration/datasets.md) in the query builder and look for `default/rum.events`. If your RUM events appear there, use the paths on this page exactly as written. If your RUM data is still in `default/logs`, add the `cx_rum.` prefix to every path on this page.

Note

There is no double write. Once an account moves, RUM data is written only to `default/rum.events`, and the `cx_rum.` paths no longer exist in `default/logs`. Anything still pointing at the old paths returns no results. See [Updating saved queries after the move](#updating-saved-queries-after-the-move).

## Shared fields[​](#shared-fields "Direct link to Shared fields")

These fields are included in all RUM logs, regardless of the event type. They provide contextual details such as session, event metadata, user identity, and environment information.

| **Full path**                                        | **Description**                 | **Example value**                                                                                                       | **Field**                     |
| ---------------------------------------------------- | ------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | ----------------------------- |
| **Session context**                                  |                                 |                                                                                                                         |                               |
| `session_context.ip_geoip.ip`                        | User's IP address               | `49.249.153.150`                                                                                                        | ip                            |
| `session_context.ip_geoip.ip_ipaddr`                 | Alternative IP address          | `49.249.153.150`                                                                                                        | ip\_ipaddr                    |
| `session_context.ip_geoip.location_geopoint.lat`     | Latitude of user location       | `21.9974`                                                                                                               | lat                           |
| `session_context.ip_geoip.location_geopoint.lon`     | Longitude of user location      | `79.0011`                                                                                                               | lon                           |
| `session_context.ip_geoip.continent_name`            | Continent name                  | `Asia`                                                                                                                  | continent\_name               |
| `session_context.ip_geoip.country_name`              | Country name                    | `India`                                                                                                                 | country\_name                 |
| `session_context.ip_geoip.city_name`                 | City name                       | `Delhi`                                                                                                                 | city\_name                    |
| `session_context.ip_geoip.postal_code`               | Postal code                     | `90210`                                                                                                                 | postal\_code                  |
| `session_context.ip_geoip.is_local`                  | Is IP local                     | `FALSE`                                                                                                                 | is\_local                     |
| `session_context.browser`                            | Browser name                    | `Chrome`                                                                                                                | browser                       |
| `session_context.browserVersion`                     | Browser version                 | `136.0.0.0`                                                                                                             | browserVersion                |
| `session_context.device`                             | Device type                     | `Desktop`                                                                                                               | device                        |
| `session_context.hasRecording`                       | Current session has recording   | `FALSE`                                                                                                                 | hasRecording                  |
| `session_context.hasScreenshot`                      | Current session has screenshot  | `FALSE`                                                                                                                 | hasScreenshot                 |
| `session_context.onlyWithErrorMode`                  | Error mode only                 | `FALSE`                                                                                                                 | onlyWithErrorMode             |
| `session_context.os`                                 | Operating system                | `MacOS`                                                                                                                 | os                            |
| `session_context.osVersion`                          | OS version                      | `10.15.7`                                                                                                               | osVersion                     |
| `session_context.prev_session.hasRecording`          | Previous session had recording  | `TRUE`                                                                                                                  | prev\_session\_hasRecording   |
| `session_context.prev_session.hasScreenshot`         | Previous session had screenshot | `FALSE`                                                                                                                 | prev\_session\_hasScreenshot  |
| `session_context.prev_session.session_creation_date` | Previous session creation time  | `1748503307441`                                                                                                         | prev\_session\_creation\_date |
| `session_context.prev_session.session_id`            | Previous session ID             | `bfcd4bf5-c4ff-48fb-99d4-b1af603707e4`                                                                                  | prev\_session\_id             |
| `session_context.session_creation_date`              | Current session creation time   | `1748514787150`                                                                                                         | session\_creation\_date       |
| `session_context.session_id`                         | Current session ID              | `c664895a-63d7-4997-ad88-ce753974ca3a`                                                                                  | session\_id                   |
| `session_context.user_agent`                         | User agent string               | `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36` | user\_agent                   |
| `session_context.user_id`                            | User ID                         | `1234`                                                                                                                  | user\_id                      |
| `session_context.user_name`                          | User name                       | `Aviv Alush`                                                                                                            | user\_name                    |
| `session_context.x_forwarded_for`                    | Forwarded IPs                   | `49.249.153.150,163.116.212.40`                                                                                         | x\_forwarded\_for             |
| **Event context**                                    |                                 |                                                                                                                         |                               |
| `event_context.severity`                             | Event severity                  | `3`                                                                                                                     | event\_severity               |
| `event_context.type`                                 | Event type                      | `user-interaction`                                                                                                      | event\_type                   |
| Labels                                               |                                 |                                                                                                                         |                               |
| `labels.cxFeatureGroupId`                            | Feature group ID                | `data-exploration`                                                                                                      | cxFeatureGroupId              |
| `labels.cxFeatureId`                                 | Feature ID                      | `logs-explorer`                                                                                                         | cxFeatureId                   |
| `labels.releaseId`                                   | Release ID                      | `web-app@866faa56`                                                                                                      | releaseId                     |
| **Page context**                                     |                                 |                                                                                                                         |                               |
| `page_context.page_fragments`                        | Page fragments                  | `query-new/archive-logs`                                                                                                | page\_fragments               |
| `page_context.page_url`                              | Page URL                        | `https://zupee-prd.app.coralogix.in/#/query-new/archive-logs?id=A9JBQSSgVyIl1jtNbPHbf&page=0`                           | page\_url                     |
| `page_context.page_url_blueprint`                    | Blueprint URL                   | `https://zupee-prd.app.coralogix.in/#/query-new/archive-logs?id=A9JBQSSgVyIl1jtNbPHbf&page=0`                           | page\_url\_blueprint          |
| `page_context.referrer`                              | Referrer                        |                                                                                                                         | referrer                      |
| **General metadata**                                 |                                 |                                                                                                                         |                               |
| `browser_sdk.version`                                | SDK version                     | `2.8.3`                                                                                                                 | browser\_sdk\_version         |
| `environment`                                        | Deployment environment          | `mumbaisaas`                                                                                                            | environment                   |
| `platform`                                           | Platform                        | `browser`                                                                                                               | platform                      |
| `timestamp`                                          | Timestamp                       | `1748514789996`                                                                                                         | timestamp                     |
| `version_metadata.app_name`                          | App name                        | `web-app`                                                                                                               | app\_name                     |
| `version_metadata.app_version`                       | App version                     | `866faa56`                                                                                                              | app\_version                  |

## User interactions[​](#user-interactions "Direct link to User interactions")

Tracks user actions such as clicks and inputs to understand behavior and flow.

| **Full path**                                   | **Description**                         | **Example value**                                  | **Field**                    |
| ----------------------------------------------- | --------------------------------------- | -------------------------------------------------- | ---------------------------- |
| `event_context.severity`                        | Severity level of the event (e.g., 1–5) | `3`                                                | severity                     |
| `event_context.type`                            | Type of the event                       | `user-interaction`                                 | type                         |
| `interaction_context.element_classes`           | CSS classes of interacted element       | `cx-input-field ng-untouched ng-pristine ng-valid` | element\_classes             |
| `interaction_context.element_id`                | Element ID                              | `cx-input-3`                                       | element\_id                  |
| `interaction_context.event_name`                | Interaction event name                  | `click`                                            | event\_name                  |
| `interaction_context.target_element`            | HTML element targeted                   | `INPUT`                                            | target\_element              |
| `interaction_context.target_element_inner_text` | Inner text of target element            |                                                    | target\_element\_inner\_text |
| `interaction_context.target_element_type`       | Type of target element                  | `text`                                             | target\_element\_type        |

## Network requests[​](#network-requests "Direct link to Network requests")

Records details of XHR and fetch requests to monitor API usage and latency.

| **Full path**                         | **Description**                    | **Example value**                                                                                          | **Field**         |
| ------------------------------------- | ---------------------------------- | ---------------------------------------------------------------------------------------------------------- | ----------------- |
| `event_context.severity`              | Event severity                     | `3`                                                                                                        | severity          |
| `event_context.type`                  | Type of event detected             | `network-request`                                                                                          | event\_type       |
| `network_request_context.duration`    | Duration of the network request    | `680`                                                                                                      | request\_duration |
| `network_request_context.method`      | HTTP method                        | `POST`                                                                                                     | request\_method   |
| `network_request_context.url`         | Full request URL                   | `https://ng-api-grpc.cx498.coralogix.com/com.coralogix.schemastore.v1.SchemaStoreService/SubmitUsageStats` | request\_url      |
| `network_request_context.status_code` | HTTP response status code          | `200`                                                                                                      | status\_code      |
| `timestamp`                           | Timestamp of the event             | `1748510384932`                                                                                            | timestamp         |
| `traceId`                             | Trace identifier for observability | `8a6eb6a6131e8680c9b36cdeb424ccc4`                                                                         | traceId           |
| `spanId`                              | Span identifier for tracing        | `7b32e31e2275c1b4`                                                                                         | spanId            |

## Errors[​](#errors "Direct link to Errors")

Captures JavaScript errors and exceptions to help identify and resolve issues impacting the user experience.

| **Full path**                       | **Description**                 | **Example value**                                           | **Field**            |
| ----------------------------------- | ------------------------------- | ----------------------------------------------------------- | -------------------- |
| `error_context.error_message`       | Error message text              | `ERROR Cannot read properties of undefined (reading 'map')` | error\_message       |
| `error_context.original_stacktrace` | Original JavaScript stack trace | `Array of 10 stack frames (see details below)`              | original\_stacktrace |

## Resources[​](#resources "Direct link to Resources")

Logs the loading of external assets (like images, scripts, and stylesheets) to measure resource performance.

| **Full path**                                | **Description**                             | **Example value**                                           | **Field**                 |
| -------------------------------------------- | ------------------------------------------- | ----------------------------------------------------------- | ------------------------- |
| `event_context.severity`                     | Severity level (info/warning)               | `3`                                                         | severity                  |
| `event_context.type`                         | Type of the event                           | `resources`                                                 | type                      |
| `resource_context.connectEnd`                | End of the connection phase                 | `67021.59999990463`                                         | connectEnd                |
| `resource_context.connectStart`              | Start of the connection                     | `67021.59999990463`                                         | connectStart              |
| `resource_context.decodedBodySize`           | Size of decoded response body               | `3993`                                                      | decodedBodySize           |
| `resource_context.deliveryType`              | Resource delivery type                      | (empty)                                                     | deliveryType              |
| `resource_context.domainLookupEnd`           | End of DNS lookup                           | `67021.59999990463`                                         | domainLookupEnd           |
| `resource_context.domainLookupStart`         | Start of DNS lookup                         | `67021.59999990463`                                         | domainLookupStart         |
| `resource_context.duration`                  | Total resource load time                    | `175.5`                                                     | duration                  |
| `resource_context.encodedBodySize`           | Size of compressed body                     | `1375`                                                      | encodedBodySize           |
| `resource_context.entryType`                 | Type of performance entry                   | `resource`                                                  | entryType                 |
| `resource_context.fetchStart`                | Start of fetch                              | `67021.59999990463`                                         | fetchStart                |
| `resource_context.finalResponseHeadersStart` | Time headers were received                  | `67196.79999995232`                                         | finalResponseHeadersStart |
| `resource_context.firstInterimResponseStart` | Interim response timing                     | `0`                                                         | firstInterimResponseStart |
| `resource_context.fragments`                 | Associated JS chunk                         | `chunk-K6NU6CD3.js`                                         | fragments                 |
| `resource_context.initiatorType`             | What triggered the resource load            | `script`                                                    | initiatorType             |
| `resource_context.name`                      | Resource URL                                | `https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js` | name                      |
| `resource_context.nextHopProtocol`           | Protocol used (HTTP/2)                      | `h2`                                                        | nextHopProtocol           |
| `resource_context.redirectEnd`               | End of redirect (if any)                    | `0`                                                         | redirectEnd               |
| `resource_context.redirectStart`             | Start of redirect (if any)                  | `0`                                                         | redirectStart             |
| `resource_context.renderBlockingStatus`      | Whether this blocked rendering              | `non-blocking`                                              | renderBlockingStatus      |
| `resource_context.requestStart`              | Time request started                        | `67024.09999990463`                                         | requestStart              |
| `resource_context.responseEnd`               | Time full response received                 | `67197.09999990463`                                         | responseEnd               |
| `resource_context.responseStart`             | Time response started                       | `67196.79999995232`                                         | responseStart             |
| `resource_context.responseStatus`            | HTTP status code                            | `200`                                                       | responseStatus            |
| `resource_context.secureConnectionStart`     | Start of secure TLS handshake               | `67021.59999990463`                                         | secureConnectionStart     |
| `resource_context.serverTiming`              | Server timing info                          | `[]`                                                        | serverTiming              |
| `resource_context.startTime`                 | Start time of resource timing measurement   | `67021.59999990463`                                         | startTime                 |
| `resource_context.transferSize`              | Total bytes transferred (including headers) | `1675`                                                      | transferSize              |
| `resource_context.workerStart`               | Start of any service worker involvement     | `0`                                                         | workerStart               |

## Long task[​](#long-task "Direct link to Long task")

Detects main thread blocking operations to surface performance bottlenecks.

| **Full path**                | **Description**                                         | **Example value**                      | **Field** |
| ---------------------------- | ------------------------------------------------------- | -------------------------------------- | --------- |
| `event_context.severity`     | Severity level (e.g., info = 1, warning = 3, error = 5) | `3`                                    | severity  |
| `event_context.type`         | Type of RUM event                                       | `longtask`                             | type      |
| `longtask_context.duration`  | Time the task blocked the main thread (in ms)           | `84`                                   | duration  |
| `longtask_context.entryType` | Type of performance entry                               | `longtask`                             | entryType |
| `longtask_context.id`        | Unique identifier for the long task                     | `5885bbfc-cefa-4e33-aa9d-bbd3acf75c30` | id        |
| `longtask_context.name`      | Source of the long task (usually self or cross-origin)  | `self`                                 | name      |
| `longtask_context.startTime` | When the long task began (in ms since page load)        | `3473.5`                               | startTime |

## Web vitals[​](#web-vitals "Direct link to Web vitals")

Reports key performance metrics like LCP, FID, and CLS to assess the core user experience.

| **Full path**                                        | **Description**                                               | **Example value**                | **Field**               |
| ---------------------------------------------------- | ------------------------------------------------------------- | -------------------------------- | ----------------------- |
| `event_context.severity`                             | Event severity level (e.g., info = 1, warning = 3, error = 5) | `3`                              | severity                |
| `event_context.type`                                 | Type of the event                                             | `web-vitals`                     | type                    |
| `web_vitals_context.name`                            | Web vital type (Largest Contentful Paint)                     | `LCP`                            | name                    |
| `web_vitals_context.value`                           | Measured LCP value in milliseconds                            | `18224`                          | value (ms)              |
| `web_vitals_context.rating`                          | Performance rating based on metric thresholds                 | `poor`                           | rating                  |
| `web_vitals_context.attribution.elementRenderDelay`  | Time from page load to element render                         | `17605.4`                        | elementRenderDelay (ms) |
| `web_vitals_context.attribution.lcpEntry.renderTime` | Time from navigation start to LCP render                      | `18224`                          | renderTime (ms)         |
| `web_vitals_context.attribution.lcpEntry.size`       | Size of the largest element contributing to LCP               | `20160`                          | size (bytes)            |
| `web_vitals_context.attribution.timeToFirstByte`     | TTFB value from navigation timing                             | `618.6`                          | timeToFirstByte (ms)    |
| `web_vitals_context.navigationType`                  | Type of navigation (navigate, reload, etc.)                   | `navigate`                       | navigationType          |
| `web_vitals_context.navigationId`                    | Identifier for navigation event                               | `1`                              | navigationId            |
| `web_vitals_context.id`                              | Unique identifier for the web vital metric                    | `v4-1748520702813-3468299023131` | id                      |

### Document navigation timings[​](#document-navigation-timings "Direct link to Document navigation timings")

When `web_vitals_context.name` is `LT`, the event carries the browser's `PerformanceNavigationTiming` entry alongside the fields above, so the whole document load sequence is queryable. Use these to find the slowest phase of a page load, or to separate a slow document from a slow render.

| **Full path**                                   | **Description**                                                     | **Example value**        | **Field**                       |
| ----------------------------------------------- | ------------------------------------------------------------------- | ------------------------ | ------------------------------- |
| `web_vitals_context.activationStart`            | Time between a prerendered document starting and being activated    | `92.1`                   | activationStart (ms)            |
| `web_vitals_context.domInteractive`             | When the document became interactive                                | `313.9`                  | domInteractive (ms)             |
| `web_vitals_context.domContentLoadedEventStart` | Immediately before the `DOMContentLoaded` handler ran               | `544`                    | domContentLoadedEventStart (ms) |
| `web_vitals_context.domContentLoadedEventEnd`   | Immediately after the `DOMContentLoaded` handler finished           | `544.1`                  | domContentLoadedEventEnd (ms)   |
| `web_vitals_context.domComplete`                | The document and every sub-resource finished loading                | `583.2`                  | domComplete (ms)                |
| `web_vitals_context.loadEventStart`             | When the document's `load` event started                            | `583.2`                  | loadEventStart (ms)             |
| `web_vitals_context.loadEventEnd`               | When the document's `load` event finished                           | `583.4`                  | loadEventEnd (ms)               |
| `web_vitals_context.unloadEventStart`           | Immediately before the previous document's `unload` handler ran     | `0`                      | unloadEventStart (ms)           |
| `web_vitals_context.unloadEventEnd`             | Immediately after the previous document's `unload` handler finished | `0`                      | unloadEventEnd (ms)             |
| `web_vitals_context.redirectCount`              | Redirects since the last non-redirect navigation                    | `0`                      | redirectCount                   |
| `web_vitals_context.url`                        | The document URL the timings belong to                              | `https://coralogix.com/` | url                             |
| `web_vitals_context.value`                      | Total page load time                                                | `583.4`                  | value (ms)                      |

`navigationType` and `type` both appear on these events and hold the same value - `navigate`, `reload`, `back_forward` or `prerender` - because the SDK copies the performance entry in whole and then derives `navigationType` from its `type`.

## Memory usage[​](#memory-usage "Direct link to Memory usage")

Reports the browser's memory consumption, broken down by what is holding it. Collected on an interval when `memoryUsageConfig` is enabled, and only in a secure context, since it relies on `measureUserAgentSpecificMemory`.

| **Full path**                                      | **Description**                                                       | **Example value**        | **Field** |
| -------------------------------------------------- | --------------------------------------------------------------------- | ------------------------ | --------- |
| `event_context.type`                               | Type of the event                                                     | `memory-usage`           | type      |
| `memory_usage_context.bytes`                       | Total memory consumption across all objects                           | `10485760`               | bytes     |
| `memory_usage_context.breakdown.bytes`             | Memory consumed by one group of objects                               | `2097152`                | bytes     |
| `memory_usage_context.breakdown.types`             | Object types in that group, such as DOM, JavaScript or shared workers | `["DOM"]`                | types     |
| `memory_usage_context.breakdown.attribution.url`   | URL of the frame or worker the memory is attributed to                | `https://coralogix.com/` | url       |
| `memory_usage_context.breakdown.attribution.scope` | Scope the memory belongs to, such as a window or a worker             | `Window`                 | scope     |

## Mobile vitals[​](#mobile-vitals "Direct link to Mobile vitals")

Reports automatically collected performance metrics such as CPU, memory, frames-per-second (fps), and app start-up times to assess mobile app responsiveness. For more details, see [Mobile Vitals](https://coralogix.com/docs/user-guides/rum/product-features/mobile-performance.md).

| **Full path**                 | **Description**                                               | **Example value**                      | **Field** |
| ----------------------------- | ------------------------------------------------------------- | -------------------------------------- | --------- |
| `event_context.severity`      | Event severity level (e.g., info = 1, warning = 3, error = 5) | `3`                                    | severity  |
| `event_context.type`          | Type of the event                                             | `mobile-vitals`                        | type      |
| `mobile_vitals_context.name`  | Specific mobile vital metric name                             | `cpu_usage`                            | name      |
| `mobile_vitals_context.type`  | High-level metric category                                    | `cpu`                                  | type      |
| `mobile_vitals_context.value` | Measured value of the metric                                  | `0.02`                                 | value     |
| `mobile_vitals_context.units` | Unit of measurement for the value                             | `percentage`, `mb`, `ms`               | units     |
| `mobile_vitals_context.uuid`  | Unique identifier for the metric sample                       | `a3a7532f-1c8d-4c02-86f4-6f7b5aefa2a1` | uuid      |

## Log[​](#log "Direct link to Log")

Provides general-purpose logging for application events and custom developer insights.

| **Full path**                                                                           | **Description**                         | **Example value**                                                                                                                                            | **Field**             |
| --------------------------------------------------------------------------------------- | --------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------- |
| `event_context.severity`                                                                | Severity level of the event (e.g., 1–5) | `3`                                                                                                                                                          | severity              |
| `event_context.type`                                                                    | Type of the event                       | `log`                                                                                                                                                        | type                  |
| `event_context.source`                                                                  | Source of the log                       | `code`                                                                                                                                                       | source                |
| `event_context.severity`                                                                | Event severity                          | `1`                                                                                                                                                          | event\_severity       |
| `event_context.source`                                                                  | Event source                            | `code`                                                                                                                                                       | event\_source         |
| `event_context.type`                                                                    | Event type                              | `log`                                                                                                                                                        | event\_type           |
| `log_context.data.event.log.customTriggerData.actionType`                               | Log action type                         | `Other`                                                                                                                                                      | log\_actionType       |
| `log_context.data.event.log.customTriggerData.extraData.exceptionInfo.error.statusCode` | Log error status code                   | `5`                                                                                                                                                          | log\_statusCode       |
| `log_context.data.event.log.customTriggerData.extraData`                                | Log extra data as JSON object           | `Mock not found`                                                                                                                                             | log\_statusMessage    |
| `log_context.data.event.log.customTriggerData.message`                                  | Log message                             | `[custom-dashboards] platform-overview.component - handleDataLoadingError: {"statusCode":5,"statusMessage":"Mock not found","metadata":{"map":{}}} - failed` | log\_message          |
| `log_context.data.event.triggerType`                                                    | Log trigger type                        | `custom`                                                                                                                                                     | log\_triggerType      |
| `log_context.data.event.severity`                                                       | Log severity: 1-6                       | `1`                                                                                                                                                          | log\_severity         |
| `log_context.data.message`                                                              | Log context message                     | `[custom-dashboards] platform-overview.component - handleDataLoadingError: {"statusCode":5,"statusMessage":"Mock not found","metadata":{"map":{}}} - failed` | log\_context\_message |

## DOM[​](#dom "Direct link to DOM")

Logs changes and structures in the Document Object Model for advanced session analysis.

| **Full path**                    | **Description**                         | **Example value** | **Field**     |
| -------------------------------- | --------------------------------------- | ----------------- | ------------- |
| `event_context.severity`         | Severity level of the event (e.g., 1–5) | `3`               | severity      |
| `event_context.type`             | Type of the event                       | `dom`             | type          |
| `snapshot_context.actionCount`   | Number of user actions recorded         | `0`               | actionCount   |
| `snapshot_context.errorCount`    | Number of errors recorded               | `0`               | errorCount    |
| `snapshot_context.hasRecording`  | Indicates if recording exists           | `true`            | hasRecording  |
| `snapshot_context.hasScreenshot` | Indicates if screenshot exists          | `false`           | hasScreenshot |
| `snapshot_context.viewCount`     | Number of views recorded                | `1`               | viewCount     |

## Custom measurement[​](#custom-measurement "Direct link to Custom measurement")

Allows developers to send specific measurements relevant to their application logic.

| **Full path**                      | **Description**                         | **Example value**        | **Field** |
| ---------------------------------- | --------------------------------------- | ------------------------ | --------- |
| `event_context.severity`           | Severity level of the event (e.g., 1–5) | `3`                      | severity  |
| `event_context.type`               | Type of the event                       | `custom-measurement`     | type      |
| `custom_measurement_context.name`  | Name of the custom measurement          | `RUM errors page loaded` | name      |
| `custom_measurement_context.value` | Value of the custom measurement         | `167`                    | value     |

## Screenshot[​](#screenshot "Direct link to Screenshot")

Captures visual snapshots during user sessions for enhanced debugging and replay context.

| **Full path**                    | **Description**                            | **Example value**                        | **Field**   |
| -------------------------------- | ------------------------------------------ | ---------------------------------------- | ----------- |
| `event_context.severity`         | Severity level of the event (e.g., 1–5)    | `3`                                      | severity    |
| `event_context.type`             | Type of the event                          | `screenshot`                             | type        |
| `screenshot_context.description` | Reason or description for the screenshot   | `creating a screenshot due to an error!` | description |
| `screenshot_context.id`          | Unique identifier for the screenshot event | `2c54846d-4a52-47dc-8911-cec10bf962b8`   | id          |

## Updating saved queries after the move[​](#updating-saved-queries-after-the-move "Direct link to Updating saved queries after the move")

Alerts, dashboards, events2metrics rules, and saved views are not updated automatically when your account moves to `default/rum.events`. Update each one yourself:

1. Point it at `default/rum.events` instead of `default/logs`.
2. Remove the `cx_rum.` prefix from every field reference. In DataPrime, `$d.cx_rum.event_context.type` becomes `$d.event_context.type`.

### Alerts[​](#alerts "Direct link to Alerts")

Once your account has moved, the **Application** dropdown on an alert that runs on `default/logs` no longer lists your RUM applications, because the RUM data is no longer in that dataset.

Set the alert's **Dataset** to `default/rum.events` and filter on the application in the query itself:

```
version_metadata.app_name:"frontend-livefeed" AND event_context.type:"error"
```

For how dataset selection works on an alert, see [Dataset alerts](https://coralogix.com/docs/user-guides/alerting/create-an-alert/logs/dataset-alerts.md).

### Dashboards, events2metrics, and saved views[​](#dashboards-events2metrics-and-saved-views "Direct link to Dashboards, events2metrics, and saved views")

Each of these stores the dataset and the field paths it was built with, so both need updating:

* **Dashboards**: repoint each widget's data source to `default/rum.events` and drop the prefix from every field in the query, the filters, and the group-by.
* **Events2metrics**: repoint the rule at `default/rum.events` and update the field paths in its query and labels. Metrics already generated under the old rule keep the labels they were written with.
* **Saved views and custom filters**: update the dataset and the field paths together. A view saved against `default/logs` keeps working, but returns no RUM data.