To add Expenses HSN/SAC code

Before you go further....... please check on the following.......

If a Purchase Voucher has multiple Stock Item, then which Item's HSN/SAC code is getting display. Also the basic amount, GST etc should be line to line and not the total of the purchase voucher.

This has a bearing on the overall, because when a voucher has multiple stock items as under:
item 1......100 Nos
item 2... 222 Kgs
items 3 ... 5 Dozens
Item 4... 10 Pcs

Then which billedquantity???

So first settle your code so that in case of multiple items, the display of all columns are of respective stockitem........ then you can work on the Billedquantity...........

 

Right now, it takes the total voucher .....

even your HSN/SAC will be wrong as it will only pick up the first item as appearing in the voucher.......