Follow an uncaught Browser SDK error as Datadog selects, normalizes, groups, measures, and alerts on it—without a diagnostics-service deployment.
The same Amplitude error remains visible from the original payload to the new-issue notification.
Datadog sees service=sdk-diagnostics and status=info. The actual error is nested under event_properties, so Error Tracking cannot use it yet.
{ "service": "sdk-diagnostics",
"event_name": "sdk.error.uncaught",
"library": "amplitude-ts-sdk-script/2.42.4",
"event_properties": {
"error_name": "TypeError",
"message": "undefined is not an object
(evaluating 'Object.keys(e.amplitude._iq)')",
"stack": "...min.js.gz:1:223108",
"stack_unminified[0]": "GlobalScope
(packages/analytics-browser/src/snippet-index.ts:52:38)"
}
}The canonical scope requires all three signals: service:sdk-diagnostics, the exact "SDK Diagnostic Event" marker, and @event_name:sdk.error.uncaught. A JSON parser exposes the payload; remappers populate Datadog’s standard error fields. Request wrappers and backend Java exceptions do not satisfy the complete scope.
service: sdk-diagnostics status: error error.kind: TypeError error.message: undefined is not an object… error.stack: TypeError … min.js.gz:1:223108
Datadog Error Tracking uses the mapped error.kind, normalized error.message, and error.stack to create its native issue fingerprint. Equivalent occurrences increase one issue’s count; the dashboard shows each group’s occurrence and percentage. Generic TypeError: Failed to fetch is excluded from the canonical SDK ranking because it normally represents customer-side network failure.
The Error Tracking monitor watches for new Browser issues in the same canonical scope and groups alerts by issue.id. Its Slack message includes the error type, message, file, category, handling state, fixed service scope, and a direct Datadog issue link. Automatic Linear ticket creation remains out of scope.
issue_link: available slack_channel: sdk-error-tracking-demo linear_ticket: not created
See whether an occurrence belongs in the actionable SDK population before Datadog groups it.
kind TypeError message undefined is not an object… frame snippet-index.ts:52