Code AnalysisHard 60s

Which Idempotency Violation

Analyze the payment handler pseudo-code. The broker guarantees at-least-once delivery. What is the core flaw?

Starter code

def on_event(evt):
    if evt.type == 'PaymentRequested':
        ledger.debit(evt.account, evt.amount)
        ledger.credit(evt.merchant, evt.amount)

idempotency at-least-once code-analysis

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