Mass maintenance in KNB5

Hi,

Is it possible to create new entries in KNB5 through MASS? My requirement is it save the dunning related values in KNB5, which has not yet been maitained. I try to do it through MASS but am not able to do so. When I select the company code and try to display the customers to that company code it gives a message as No data exists. What can be done? Pls help.

Thanks & Regards,

Anu.