fix: validate reorder group warehouse (#41478)

erpnext/stock/doctype/item/item.py

@@ -5,7 +5,7 @@ import copy
 import json
 
 import frappe
-from frappe import _
+from frappe import _, bold
 from frappe.model.document import Document
 from frappe.query_builder import Interval
 from frappe.query_builder.functions import Count, CurDate, UnixTimestamp
@@ -469,6 +469,13 @@ class Item(Document):
 	def validate_warehouse_for_reorder(self):
 		"""Validate Reorder level table for duplicate and conditional mandatory"""
 		warehouse_material_request_type: list[tuple[str, str]] = []
+
+		_warehouse_before_save = frappe._dict()
+		if not self.is_new() and self._doc_before_save:
+			_warehouse_before_save = {
+				d.name: d.warehouse for d in self._doc_before_save.get("reorder_levels") or []
+			}
+
 		for d in self.get("reorder_levels"):
 			if not d.warehouse_group:
 				d.warehouse_group = d.warehouse
@@ -485,6 +492,19 @@ class Item(Document):
 			if d.warehouse_reorder_level and not d.warehouse_reorder_qty:
 				frappe.throw(_("Row #{0}: Please set reorder quantity").format(d.idx))
 
+			if d.warehouse_group and d.warehouse:
+				if _warehouse_before_save.get(d.name) == d.warehouse:
+					continue
+
+				child_warehouses = get_child_warehouses(d.warehouse_group)
+				if d.warehouse not in child_warehouses:
+					frappe.throw(
+						_(
+							"Row #{0}: The warehouse {1} is not a child warehouse of a group warehouse {2}"
+						).format(d.idx, bold(d.warehouse), bold(d.warehouse_group)),
+						title=_("Incorrect Check in (group) Warehouse for Reorder"),
+					)
+
 	def stock_ledger_created(self):
 		if not hasattr(self, "_stock_ledger_created"):
 			self._stock_ledger_created = len(
@@ -1360,3 +1380,10 @@ def get_asset_naming_series():
 	from erpnext.assets.doctype.asset.asset import get_asset_naming_series
 
 	return get_asset_naming_series()
+
+
+@frappe.request_cache
+def get_child_warehouses(warehouse):
+	from erpnext.stock.doctype.warehouse.warehouse import get_child_warehouses
+
+	return get_child_warehouses(warehouse)

erpnext/stock/doctype/item/test_item.py

@@ -889,6 +889,27 @@ class TestItem(FrappeTestCase):
 		self.assertEqual(data[0].description, item.description)
 		self.assertTrue("description" in data[0])
 
+	def test_group_warehouse_for_reorder_item(self):
+		from erpnext.stock.doctype.warehouse.test_warehouse import create_warehouse
+
+		item_doc = make_item("_Test Group Warehouse For Reorder Item", {"is_stock_item": 1})
+		warehouse = create_warehouse("_Test Warehouse - _TC")
+		warehouse_doc = frappe.get_doc("Warehouse", warehouse)
+		warehouse_doc.db_set("parent_warehouse", "")
+
+		item_doc.append(
+			"reorder_levels",
+			{
+				"warehouse": warehouse,
+				"warehouse_reorder_level": 10,
+				"warehouse_reorder_qty": 100,
+				"material_request_type": "Purchase",
+				"warehouse_group": "_Test Warehouse Group - _TC",
+			},
+		)
+
+		self.assertRaises(frappe.ValidationError, item_doc.save)
+
 
 def set_item_variant_settings(fields):
 	doc = frappe.get_doc("Item Variant Settings")