For each item , some pack rules are listed with quantity. Now based on the quantity ordered for an item i want to get the specific pack rule that is defined for specific quantity of the item ordered in the sales order and show it in picking ticket in a column .. I have added the column but i don't know how to get the specific pack rule for an item for the specific quantity ordered in the sales order

I believe the rather boring answer is to use suitescript to set the matching pack rule on a custom field on the item sublist

can i define a custom field on item sublist ? and then i would be able to print it using $item.pack_rule etc in custom pdf template?