I tried to enable writeback feature on OBIEE 12.2.1.2.0 version but for some reason, it's not working. Any help on this is greatly appreciated.
"it's not working" will not help us help you.
What exactly have you done so far?
What exactly have you configured where?
What exactly is the error message?
What exactly do the logs say?
So far all we can tell you is "Yes, correct analysis. Theere is some reason."