Create a booking and atomically debit the agent wallet.
Idempotency-Key from Step 1, but modify the payload (e.g., change a passenger name). You should receive a 409 Conflict error, preventing you from accidentally re-using keys for different intents.
idem-123).A unique string to identify this request. Retrying a request with the same key will return the cached response.
Unique correlation ID for tracing.