Historical data and backfill

Historical data and backfill

Common questions about historical data and backfill.

Articles

Why does Apple Health backfill return empty arrays?Why does a historical fetch return a 504 timeout?Why am I hitting rate limits during a backfill?When is historical data available after connect?Can the SDK retrieve historical data, and over what period?Why did old Garmin payloads arrive without my request?How do CGM glucose webhook payloads work?Can I default Garmin historical data permission on?Why is a workout timestamp weeks in the past?Can I see the COROS historical-consent choice?Are there limits on Wahoo backfill requests?How do I detect backfill completion with S3 destinations?Why isn't the backfill / Sync Now button working?