Run flows on copied sheets and dummy records first, then simulate edge cases like duplicate webhooks, missing fields, and delayed emails. Require a manual confirmation step before any transfer, and keep balances read-only, proving reliability before you trust automation with real-world stakes that cannot tolerate preventable, cascading, or opaque failures.
Log who triggered what, when, and why, linking each change to a message or record. Use concise, human sentences and permalinks, not cryptic IDs, so future-you can understand decisions quickly and reverse or repeat them confidently without digging through brittle system histories that amplify confusion at exactly the worst moment.
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