I am facing the same problem.
I am creating rebate agreements using the FM:MM_ARRANG_NEW_ARRANG_INSERT. This FM successfully inserts the records into all the related tables
KONA - Rebate agreements
KONH - Conditions header
KONP - Conditions item
I am able to view the rebate in VBO3 tcode, but I am not able to view the related conditions. It is just because the relation b/w KONA and Conditions [ KONH/KONP] happens in KOTE001. This entry is missing. In development I forced the entry into the table and then it started working.
Can anyone guide me on how to create the relevant entries in the table KOTE001 using a FM or some standard means?