iam selecting the data from bkpf to I_BKPF based on selection criteria.
then getting the data from REGUP to I_REGUP by doing for all entries in I_BKPF.
suppose in I_BKPF i have 20 records. and i got 3 records in I_REGUP.
now i need data from I_BSIK by doing for all entries on remaining ( 20-3 = 17).
please tell me how can i write the logic for it