Accounts Payable allows you to define up to two User-Defined Fields for which you can create User-Defined Codes to enter or select in those fields. This allows you to set up a category you want to track and define selections for it. For example, if you want to track the state in which your vendors reside, use one of the two code fields (User Field 1 or User Field 2) on the User-Defined Fields tab in the AP Module Preferences window, and type State. Then you could add the states as Codes to that field when you select Options > <Code Name> from the menu bar.

After you define all the codes you want to use, you can select them on the User-Defined tab of the AP Vendors window to add information for individual vendors. You can add new Codes at any time.