Full Answer
Log errors, retry transient failures (429, 5xx), skip permanent failures (400, 403). Non-blocking implementation.
Cherry Seed
How should I handle Klaviyo API errors?
Klaviyo server-side
event tracking API
email marketing data
Quick Answer
Log failed requests with response codes: 200 (success), 400 (bad JSON), 403 (invalid key), 429 (rate limit). Retry 429 and 5xx errors with exponential backoff. Don't retry 400/403 (permanent failures). Queue failed events for manual review. Non-blocking—don't halt checkout on API failure.