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During user acceptance testing, customers entering a Journey through an API Event occasionally receive duplicate welcome emails. Investigation shows identical API requests are sometimes submitted twice within seconds because of application retries. Which recommendation best reduces duplicate messaging?
Correct Answer: B
Duplicate API requests can create multiple journey entries unless the integration prevents repeated processing of the same event. Implementing idempotency, unique event identifiers, or duplicate detection ensures retries do not trigger duplicate customer communications while maintaining reliable integrations.