You can define a list of accounts frequently used in accounts payable invoices for a supplier. This list can be created in A/P and Expense Accounts Entry (accessed from Voucher Entry) or in Supplier Maintenance. You may access this list in any of the accounts payable voucher windows using the Lookup button to select the accounts for an invoice.
If you use this option, the first sequential account will automatically appear in Voucher Entry or One Step Voucher and Payment Entry as the expense account when you select the supplier.