To maintain the default information of vendors click on “Maintain” from menu bar then select the option of “ Default information” and fromside menu option of “Vendors” like below After that the following window will appear The first tab is about the payment terms C.O.D (cash on delivery)..if you select this option, it means you will pay cash to this vendor on delivery..Second option is the “ PREPAID ” if you select this option,it means you will make the payment in advance..in the option of “ Due in number of days ” you will also set the credit limit..In this option you will have to select the due days number and the number of days in which discount will received and also the percentage of discount and credit limit..In the option of “ Due on day of net month ” you will have to select the date of next month when the payment becomes due..After that the option of “ Due at end of month ” it means the payment becomes due at end of month ,in this option there is no need of any date.. I...