For each control listed, select how it could be implemented in an integrated ERP system. Identify the implementation for the first four controls in this step, and then the last four controls in the next step. (If the control given will still be required as stated in an integrated ERP system, select "Still required". Some choices may be used more than once.) Control Implementation Cancellation of the voucher package by the cashier after signing the check Control field in supplier invoice record to indicate the document has been used Separation of duties of approving invoices for payment and signing checks Still required Prenumbering and periodically accounting for all purchase orders Sequence check of all purchase orders Periodic physical count of inventory