This article explains that if you make a transaction invoice with a peritem discount at DealPOS, the item discount will not be displayed on the invoice made at Jurnal.id, for more details you can check it in the following article :
I. Go to Sell and Make a Transaction
**giving discount per item as picture

Then, open the invoice

II. Check it Out in Jurnal ID
Go to Sales - Select Invoice

it's only shows total discount without detail percentage of items
