Trying to insert batch in tabitem price

I’m trying to insert a field called “batch” in tabitem price, but i don’t know at what point prices are inserted into the table. I’m trying to make item prices according to batches. Can someone tell me where the code is which inserts prices into the table?

thanks

To search your local repos try something like this

frappe@ubuntu1804lts:~/frappe-bench$ find . -name ‘*.py’ | xargs grep ‘tabItem Price’

That points to this: