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A company sells home furnishings online using its secure website. Online transactions are routed to accounting and delivery systems hourly for processing. Which is the most effective control to affirm that transactions are successfully being routed to the accounting and delivery systems?

Transactions are automatically numerically sequenced. Sequences are checked and gaps in continuity are accounted for.

System time is synchronized hourly using a centralized time server. All transactions have a date/time stamp.

Processing systems check for duplicated transaction numbers. If a transaction number is duplicated (already present), it is rejected.

Explanation

Transaction Management

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