An Event Grid handler sometimes receives the same event twice and may receive later events first. Which two application measures are appropriate? Select 2 answers.

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A.Assume changing retry duration creates strict publication order
B.Design state transitions to tolerate or reconcile out-of-order arrival
C.Acknowledge receipt before safely accepting any work
D.Use stable event IDs or business versions for idempotent processing
E.Put the full multi-gigabyte object into every event

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Design state transitions to tolerate or reconcile out-of-order arrival
Use stable event IDs or business versions for idempotent processing

Stable identifiers and order-aware state handling address at-least-once and non-guaranteed ordering. Retry duration does not create global order, early acknowledgment can lose work, and large objects should be referenced rather than embedded. Source guide: PDF page(s) 51.

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