feat: add Reserved Stock column in Stock Balance Report

erpnext/stock/report/stock_balance/stock_balance.py

@@ -100,6 +100,7 @@ class StockBalanceReport(object):
 		_func = itemgetter(1)
 
 		self.item_warehouse_map = self.get_item_warehouse_map()
+		sre_details = self.get_sre_reserved_qty_details()
 
 		variant_values = {}
 		if self.filters.get("show_variant_attributes"):
@@ -133,6 +134,9 @@ class StockBalanceReport(object):
 
 				report_data.update(stock_ageing_data)
 
+			report_data.update(
+				{"reserved_stock": sre_details.get((report_data.item_code, report_data.warehouse), 0.0)}
+			)
 			self.data.append(report_data)
 
 	def get_item_warehouse_map(self):
@@ -159,6 +163,18 @@ class StockBalanceReport(object):
 
 		return item_warehouse_map
 
+	def get_sre_reserved_qty_details(self) -> dict:
+		from erpnext.stock.doctype.stock_reservation_entry.stock_reservation_entry import (
+			get_sre_reserved_qty_details_for_item_and_warehouse as get_reserved_qty_details,
+		)
+
+		item_code_list, warehouse_list = [], []
+		for d in self.item_warehouse_map:
+			item_code_list.append(d[1])
+			warehouse_list.append(d[2])
+
+		return get_reserved_qty_details(item_code_list, warehouse_list)
+
 	def prepare_item_warehouse_map(self, item_warehouse_map, entry, group_by_key):
 		qty_dict = item_warehouse_map[group_by_key]
 		for field in self.inventory_dimensions:
@@ -435,6 +451,13 @@ class StockBalanceReport(object):
 					"convertible": "rate",
 					"options": "currency",
 				},
+				{
+					"label": _("Reserved Stock"),
+					"fieldname": "reserved_stock",
+					"fieldtype": "Float",
+					"width": 80,
+					"convertible": "qty",
+				},
 				{
 					"label": _("Company"),
 					"fieldname": "company",