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Configure the destination

  1. Open your Google Analytics destination in Masivo’s CDP connections.
  2. Configure at least one complete stream. Web uses its G-... Measurement ID and API Secret. Android and iOS each use their Firebase App ID and the API Secret from the corresponding GA4 app data stream.
  3. Enable Sync events and/or Sync purchases. Include the event names you need when restricting the allowed-events list.
  4. Use Test connection to validate sample payloads. This checks formatting, not credentials or actual collection; verify receipt in the real stream.
The existing web configuration remains valid. App streams are optional, and an app-only setup is supported. Keep all API secrets in Masivo, not in links or the app.

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Connect client context

Your website/app captures the real analytics identity and session and supplies an optional ga4 object with events. For purchases, pass that context through your checkout backend, which sends the protected PURCHASE event to Masivo. Web uses the Google tag’s client_id; Android/iOS use Firebase’s app_instance_id. Set session_id from the same session. Masivo does not collect these values automatically or replace the Google/Firebase SDK. Events without a real identity continue using the previous customer-ID fallback on the web stream. They cannot be used to confirm that session attribution is fixed. An app with an identity but an unconfigured stream produces a configuration error instead of being rerouted.

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Validate acquisition and purchases

Use one labelled link and one purchase for each of Meta, Braze and Masivo. Check the final URL, the app’s campaign handling, the identity/session and the purchase received by GA4. Test Android installation referrers separately from installed-app opens and iOS deferred resolution. Select one purchase emitter per flow to avoid sending the purchase through both the client and Masivo. The integration reference contains the request format, UTM precedence, channel defaults, Firebase handoff and reporting acceptance checks.