Sales area " " is not defined for Customers

Hai Media Experts,

            While saving the BP after changing the payment term in the sales area under Billing Tab, we have got an error message "Sales area "    " is not defined for Customers". Please note that BP is maintained in both Retailer and  Media Customer Roles.Please give me a solution for this.

Edited by: sunanthvn on Aug 9, 2011 12:11 PM