A Durable Functions orchestrator makes a direct nondeterministic external API call during replay. Which change is most appropriate?

Choose the single best answer.

A.Disable retries and assume history no longer replays
B.Move the external call into an activity and keep orchestration deterministic
C.Move every workflow record into process memory
D.Replace the call with a different random API inside the orchestrator

Show the answer and explanation

✓ Correct answer

Move the external call into an activity and keep orchestration deterministic

Activities are the appropriate place for external and nondeterministic work while deterministic orchestration replays recorded history. Process memory loses durability, disabling retries does not erase replay requirements, and changing to another random API preserves the same nondeterminism. Source guide: PDF page(s) 47.

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