I need to find the errors in this diagram

When Super Cy Flowers Inc Accounts Payable department receives an invoice, a clerk enters that information into the expenditure system. The expenditure system updates the Accounts Payable file stored on magnetic tape. The expenditure system then compares the invoice information to the Receiving Report file stored on magnetic disk and the Purchase Order file stored on magnetic tape. If the information matches, the expenditure system generates a check which is-manually reviewed and signed by the Accounts Payable clerk. The clerk forwards the check to the vendor (6 points) Update Accounts Payable file Accounts Payable Input invoice Match to Receiving Report and Purchase Order ()()() Receiving Report Generate check Purchase order Review check and forward to vendor check Vendor