Hi,
As per forum rule, one question per thread.
1. Is there a way where i can have my own ItemCode or Business partner codes instead of the auto generated ones? If yes, how do i go about it?
Yes possible to do manual. Refer below screen and same way follow for item master data
2. How do i prevent the creation of a BP with the same name?
Yes possible by means of transaction notification.
Thanks & Regards,
Nagarajan