How to automatically get HSN/SAC from Inventory in Invoice Line Item

That’s not your post, and its a year old.

I am having the same issue. I am on version number

The HSN/SAC columns are not auto-filled in sale/purchase invoices.
They are not printed on the invoices even if I manually fill the HSN/SAC columns.

I have set the localization to India and all the necessary HSN/SAC fields are filled for both inventory and Non-Inventory items.

Dear @Tut,
Still, there is a problem with it.
I am using Server Edition with Version

Inventory Item with HSN/SAC,

Sales Invoice Edit screen, where the HSN/SAC is Empty.

Final Sales Invoice, where Localisation HSN/SAC is not getting fetched.