Additional Data for Vendor Line Items 
When you enter a vendor line item, some fields simply are not displayed because of lack of space on the screen. These additional fields include:
From the vendor line entry screen, choose Extras
® More data to see the extra data for an item.Enter the details you want and then select
ENTER to go back to the vendor line item screen, or enter the account assignment for the subsequent items.You must fill the PostKey and Account fields for the next line items. To make a debit posting to an expense account, such as office supplies, enter a posting key of 40 and then the G/L account number for the office supplies account, 476000.