Internal ControlControl activity(ies) 1.Sales invoices are matched with shipping documents by the computer system and an iii exception report is generated. 2.Receiving reports are prenumbered and accounted for on a daily basis.iii 3.Sales invoices are independently verified before being sent to customers.v 4.Payments by cheque are received in the mail by the receptionist, who lists the chequesiv and restrictively endorses them. 5.Labour hours for payroll are reviewed for reasonableness by the computer system.ii 6.Cheques are signed by the company president, who compares the cheques with theiv underlying supporting documents