What IT controls should prevent/detect the following threats? Explain 1. The data entry clerk mis-keys the customer

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What IT controls should prevent/detect the following threats? Explain

1. The data entry clerk mis-keys the customer number for a customer order, so the goods are sent to the wrong address and charged to the wrong customer.

2.An accounts payable clerk changes the bank details for a vendor to her own, enters a duplicate vendor invoice, and pays the amount to herself.

3.The sales system generates shipping documents as authority for shipment to customers, but some shipments are not invoiced to customers.

4.The computer program processing sales incorrectly calculates GST.

5.The data entry clerk entering vendor invoices for acquisitions keys a non-existing expense account number, and so no expense was debited for this invoice.