GA4 Dimensions & Metrics Explorer

Session default channel group sessionDefaultChannelGroup

The rule-based channel (Organic Search, Direct, Referral…) that started the session.

Type
Dimension
Scope
Session
Category
Traffic source
API name
sessionDefaultChannelGroup

Compatibility

Likely compatible (scope-based estimate — run fetch_metadata.py for Google's exact matrix):

DatedateDay of weekdayOfWeekHourhourCountrycountryCitycityDevice categorydeviceCategoryOperating systemoperatingSystemBrowserbrowserLanguagelanguageSession sourcesessionSourceSession mediumsessionMediumSession source / mediumsessionSourceMediumSession campaignsessionCampaignNameFirst user default channel groupfirstUserDefaultChannelGroupPage pathpagePathPage path + query stringpagePathPlusQueryStringPage titlepageTitleLanding pagelandingPageHostnamehostNameEvent nameeventNameNew / returningnewVsReturningAudience nameaudienceNameActive usersactiveUsersNew usersnewUsersTotal userstotalUsersSessionssessionsEngaged sessionsengagedSessionsEngagement rateengagementRateAverage session durationaverageSessionDurationBounce ratebounceRateViewsscreenPageViewsViews per sessionscreenPageViewsPerSessionEvent counteventCountEvent count per usereventCountPerUserConversionsconversionsKey eventskeyEventsUser engagementuserEngagementDurationTotal revenuetotalRevenueTransactionstransactions

Watch out combining it with: Cohort, Cohort nth day — these can raise incompatible dimensions and metrics.