fix: Add Discount Account field

erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.json

@@ -73,6 +73,7 @@
   "manufacturer_part_no",
   "accounting",
   "expense_account",
+  "discount_account",
   "col_break5",
   "is_fixed_asset",
   "asset_location",
@@ -849,12 +850,18 @@
    "options": "Company:company:default_currency",
    "print_hide": 1,
    "read_only": 1
+  },
+  {
+   "fieldname": "discount_account",
+   "fieldtype": "Link",
+   "label": "Discount Account",
+   "options": "Account"
   }
  ],
  "idx": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-06-16 19:57:03.101571",
+ "modified": "2021-07-13 02:04:37.787882",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Purchase Invoice Item",