In plain language
Two automations update the same record at once, and one silently overwrites the other’s change.
Example
Two webhooks for the same customer arrive together, both find no existing contact, and both create one.
Related terms
Deduplication · Idempotency · Queue · Record
Common misconception
Race conditions are not rare in automation; webhooks and parallel runs make simultaneous updates common.
Implementation guidance
Process events for the same record one at a time, use unique keys or upserts, re-read data before writing, and add locks or queues where order matters.