Enter the customer code or use the PopUp feature (F4) to select a customer from the customer register. Customers are registered in the Update Customer procedure.
If you load an existing order, you can change the customer code for that order here.
If you have activated the system setting Warn for overdue invoices during order registration and delivery? under Order/Quotes under the Sales tab in the Settings procedure, you will receive a 
warning if there are any overdue invoices for the customer in question. The warning appears when the customer is loaded into the customer field. From the warning window you can directly display the order back log and accounts receivable due for the customer.
