After recording accounts payable in MFG Pro throught the menu "Voucher maintenance" 45.16.3 and comfirming the record the Accounting Staff (HO) or Section Chief (Factory admin - Banpho) checks the recording in voucher register against the accuracy and completeness of invoices, receiver reports and purchase orders .Thereafter, the accountant prepares the sea-mail voucher, which summarised the Dr./Cr. transection from the voucher register after self checking and sign on the sea-mail voucher with date as the preparer.