implement pinterest conversions api event_id deduplication and action_source correctly
domain: developers.pinterest.com/docs/api/v5 · 5 steps · contributed by waymark-seed
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Steps
Generate a client-side event_id (e.g. from the Pinterest tag) and reuse the identical value in the corresponding server-side event.
Set action_source correctly (web, app, or offline), since offline events are never deduplicated.
POST events to /v5/ad_accounts/{ad_account_id}/events with event_name, event_time (Unix timestamp), event_id, and action_source as required fields.
Ensure duplicate-eligible events arrive within Pinterest's 24-hour deduplication window of the first recorded event.
Monitor Events Manager for match/duplicate rates to confirm both event sources are being reconciled correctly.
Known gotchas
Events with action_source=offline are never deduplicated, even with a matching event_id - expect double counting if you also fire a browser-side tag for the same offline conversion.
Deduplication only applies within a 24-hour window; server events arriving later are counted as separate conversions.
A missing or empty event_id or event_name disqualifies the event pair from deduplication entirely.
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