Hi Pranaya,
You need to write a microflow which will loop over all the objects in Entity and change the object to set the year and month as per the date attribute.
Take a look at the documentation for this here and for date time operations here
Hope this helps!
Hi Radhika,
I have followed your steps as created microflow
and created one action button on data grid and passing this microflow on on_change event but when I click that button nothing is happening can u please help me.