There is a PO Security code for Purchase Orders and an AP Security Code for Invoices.
Security Codes represent departments or divisions and help to determine the approval workflow. Users will only have the ability to view information that pertains to their specific security codes.
There is also a PE Security Code for Vendors. Most users will only see VENDORS(If they are Active), INTERNAL(For Bill to and Ship To on an PO), and EMPLOYEE(For Reimbursement Requests).