fix: total weight not set for free items
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index e6b14c2..2564379 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -25,7 +25,8 @@
 
 class AccountMissingError(frappe.ValidationError): pass
 
-force_item_fields = ("item_group", "brand", "stock_uom", "is_fixed_asset", "item_tax_rate", "pricing_rules")
+force_item_fields = ("item_group", "brand", "stock_uom", "is_fixed_asset", "item_tax_rate",
+	"pricing_rules", "weight_per_unit", "weight_uom", "total_weight")
 
 class AccountsController(TransactionBase):
 	def __init__(self, *args, **kwargs):
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index 873cfec..70e4c2c 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -314,7 +314,9 @@
 		"last_purchase_rate": item.last_purchase_rate if args.get("doctype") in ["Purchase Order"] else 0,
 		"transaction_date": args.get("transaction_date"),
 		"against_blanket_order": args.get("against_blanket_order"),
-		"bom_no": item.get("default_bom")
+		"bom_no": item.get("default_bom"),
+		"weight_per_unit": args.get("weight_per_unit") or item.get("weight_per_unit"),
+		"weight_uom": args.get("weight_uom") or item.get("weight_uom")
 	})
 
 	if item.get("enable_deferred_revenue") or item.get("enable_deferred_expense"):
@@ -369,6 +371,9 @@
 	if meta.get_field("barcode"):
 		update_barcode_value(out)
 
+	if out.get("weight_per_unit"):
+		out['total_weight'] = out.weight_per_unit * out.stock_qty
+
 	return out
 
 def get_item_warehouse(item, args, overwrite_warehouse, defaults={}):