sales area is not defined for customer showingerror mesage number F2644

Dear All,

While creating a new customer getting an error as 'Sales Area Is Not Defined For Customer'. (Selected Sold to party as customer group, even partner function & determination checked properly).Here i have maintained all sales org and distribution channel. Please guide me if someone knows whats the issue excatly.

Thanks in advance.

Best Regards,

Gbr