Lock date not working for inv.items & delivery note

1
  1. Generated DELIVERY NOTE from inventory items list for sales with
    date 18/03/2020
  2. New account year entered as 01-04-2020 to 31-03-2021
  3. After editing same item with new sl no details in
    inventory list found, locked DELIVERY NOTE details also edited

any one can help,what could be problem

D ANNASWAMY

2

lock date is to prevent modification of transactions prior to a set date.
it does not prevent modifications of master data like inventory items, customers, suppliers, etc.
so editing these will change the same appearing in relevant transactions.

3

Thank you