This field is on the Main tab of the Customer Maintenance window.
(Optional) You can keep track of your Account codes in the Code Maintenance window, accessible from the File >Configure menu in Customer Maintenance.
Use the Account Codes field to categorize customers. You can use the codes to include or exclude accounts on reports.
For example:
Assign a code of P to all of your paint contractors. Then you can run sales analysis reports for those accounts to determine the profit margin for that customer group.
Assign a code of T to all your transfer accounts. Then you can exclude them from the reports you run for your regular charge accounts.
This field is alphanumeric. You can enter a combination of up to four letters and numbers. Each position of the field is independent of the other positions. For example, _P__ is not the same as P___.