Accounts Receivable allows you to create up to two User-Defined Fields for which you can define specific Codes to enter or select in those fields. These fields allow you to set up a category you want to track and then define selections for it. For example, if you want to track the counties in which your customers live, use one of the two code fields (User Field 1 or User Field 2) on the User-Defined Fields tab of the AR Module Preferences window, and type County. Then you can add Codes to that field when you select Options > <Code Name> from the menu bar, such as Nassau, Ada, etc.

You will then be able to attach the codes to individual customers on the User-Defined tab of the AR Customers window from the Lookup.