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CISSP study material · question 78 of 500

A payments service fails part way through a multi-step transfer: funds have left the source ledger and the destination write has errored. Developers propose a handler that retries the remaining step and, failing that, marks the transfer complete so a nightly job can reconcile it. Which handling matches OWASP's 2025 guidance on exceptional conditions?

• Software security
• Security operations

1. Unwind every step the transaction completed and begin the whole transfer again from a clean state.
2. Record the partial state, alert operations, and let the calling service decide whether to resume.
3. Commit the completed steps and queue a compensating entry for when the destination ledger responds.
4. Retry the failed step in place and settle any residual difference in the nightly reconciliation job.

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