implement appsflyer server-to-server (s2s) postbacks for conversions that happen outside the app
domain: dev.appsflyer.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Use the S2S API to report events happening outside the app (e.g. a subscription renewal on your website) rather than relying on SDK-only tracking.
Include the AppsFlyer ID (mandatory) in every S2S call so the event attributes correctly to the originating install.
Supply the eventTime property for accurate timestamping, since AppsFlyer uses it together with arrival time to place bulk-submitted events correctly.
For endpoints requiring device context, explicitly pass the ua (user agent) and ip parameters in the payload.
Validate that events appear correctly attributed in AppsFlyer's raw data and dashboards before relying on S2S for revenue-critical events.
Known gotchas
The AppsFlyer ID is mandatory for attribution - without it, an S2S event has no install to attach to and won't attribute correctly.
Some endpoints require you to explicitly send ua/ip parameters that the SDK would normally capture automatically - omitting them breaks attribution for those integrations.
Bulk-submitted events are ordered by their eventTime property, not arrival order, so incorrect client-side timestamps can misplace events in the attribution timeline.
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