Power to rectify decree is not a power to give second thought over the matter. Power u/s 152 is confined to something initially intended by vourt but left out or added against said intention.
Supreme Court of India
Jayalakshmi Coelho vs Oswald Joseph Coelho on 28 February, 2001
BRIJESH KUMAR, J.
https://www.lawweb.in/2012/04/power-to-rectify-decree-us-152-of-cpc.html