Dear Venu,
Thanks for the reply, By the above t.codes mentioned I will be able to access the details of the "billed" credit customers for a particular period of time, now, I need to get the payment details of the "normally" billed customers too, so is it appropriate for me to go to <KNB1> and on the basis of "payment history record" <ZVER>, get the details of the customers and then filter according to your guidance rather than opting for <KNA1>.. is this an appropriate approach..?
Thx.