fix: incorrect valuation rate for finished good entry (#20165)

diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.py b/erpnext/stock/doctype/stock_entry/stock_entry.py
index 01d54de..1c9d4c0 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.py
@@ -103,9 +103,8 @@
 
 		if self.work_order and self.purpose == "Material Consumption for Manufacture":
 			self.validate_work_order_status()
-		else:
-			self.update_work_order()
 
+		self.update_work_order()
 		self.update_stock_ledger()
 		self.make_gl_entries_on_cancel()
 		self.update_cost_in_project()
@@ -479,10 +478,16 @@
 	def set_basic_rate_for_finished_goods(self, raw_material_cost, scrap_material_cost):
 		if self.purpose in ["Manufacture", "Repack"]:
 			for d in self.get("items"):
-				if d.transfer_qty and (d.bom_no or d.t_warehouse) and (getattr(self, "pro_doc", frappe._dict()).scrap_warehouse != d.t_warehouse):
+				if (d.transfer_qty and (d.bom_no or d.t_warehouse) and raw_material_cost
+					and (getattr(self, "pro_doc", frappe._dict()).scrap_warehouse != d.t_warehouse)):
 					d.basic_rate = flt((raw_material_cost - scrap_material_cost) / flt(d.transfer_qty), d.precision("basic_rate"))
 					d.basic_amount = flt((raw_material_cost - scrap_material_cost), d.precision("basic_amount"))
 
+				if (not d.basic_rate and self.work_order and
+					frappe.db.get_single_value("Manufacturing Settings", "material_consumption")):
+					d.basic_rate = get_valuation_rate_for_finished_good_entry(self.work_order) or 0
+					d.basic_amount = d.basic_rate * d.qty
+
 	def distribute_additional_costs(self):
 		if self.purpose == "Material Issue":
 			self.additional_costs = []
@@ -833,7 +838,6 @@
 					(self.purpose == "Manufacture" or self.purpose == "Material Consumption for Manufacture")
 					and frappe.db.get_single_value("Manufacturing Settings", "material_consumption")== 1):
 					self.get_unconsumed_raw_materials()
-
 				else:
 					if not self.fg_completed_qty:
 						frappe.throw(_("Manufacturing Quantity is mandatory"))
@@ -1152,20 +1156,17 @@
 			se_child.s_warehouse = item_dict[d].get("from_warehouse")
 			se_child.t_warehouse = item_dict[d].get("to_warehouse")
 			se_child.item_code = item_dict[d].get('item_code') or cstr(d)
-			se_child.item_name = item_dict[d]["item_name"]
-			se_child.description = item_dict[d]["description"]
 			se_child.uom = item_dict[d]["uom"] if item_dict[d].get("uom") else stock_uom
 			se_child.stock_uom = stock_uom
 			se_child.qty = flt(item_dict[d]["qty"], se_child.precision("qty"))
-			se_child.expense_account = item_dict[d].get("expense_account")
 			se_child.cost_center = item_dict[d].get("cost_center") or cost_center
 			se_child.allow_alternative_item = item_dict[d].get("allow_alternative_item", 0)
 			se_child.subcontracted_item = item_dict[d].get("main_item_code")
-			se_child.original_item = item_dict[d].get("original_item")
-			se_child.po_detail = item_dict[d].get("po_detail")
 
-			if item_dict[d].get("idx"):
-				se_child.idx = item_dict[d].get("idx")
+			for field in ["idx", "po_detail", "original_item",
+				"expense_account", "description", "item_name"]:
+				if item_dict[d].get(field):
+					se_child.set(field, item_dict[d].get(field))
 
 			if se_child.s_warehouse==None:
 				se_child.s_warehouse = self.from_warehouse
@@ -1470,6 +1471,24 @@
 
 	return used_alternative_items
 
+def get_valuation_rate_for_finished_good_entry(work_order):
+	work_order_qty = flt(frappe.get_cached_value("Work Order",
+		work_order, 'material_transferred_for_manufacturing'))
+
+	field = "(SUM(total_outgoing_value) / %s) as valuation_rate" % (work_order_qty)
+
+	stock_data = frappe.get_all("Stock Entry",
+		fields = field,
+		filters = {
+			"docstatus": 1,
+			"purpose": "Material Transfer for Manufacture",
+			"work_order": work_order
+		}
+	)
+
+	if stock_data:
+		return stock_data[0].valuation_rate
+
 @frappe.whitelist()
 def get_uom_details(item_code, uom, qty):
 	"""Returns dict `{"conversion_factor": [value], "transfer_qty": qty * [value]}`