Hello Ajay,
I suggest that you please read my post carefully before posting an answer ... I said "as per your suggestions" means -
I used T.code XD01 to create a Customer after you told me to create a customer for that sales organization ,but then I am still getting error message -
" Sales are XXXX(1233) is not defined for customers"
But I was initially trying to create a sales organization & getting the error but you suggested me to create a customer !