Hi Sooraj,
I'm not sure what you want to do in your BTE fm.
Changes of SKA1 and SKB1 will be logged in CHHDR in object class SACH automatically.
But this will happen after the BTE. The BTE is before saving the updates, if I understand the fm's description. There are no changes made at all. You can find the differences, if you check the interface parameters SKA1 and SKB1 against the database values of SKA1 and SKB1.
Regards,
Klaus