From b82aea4a87852a683e231c39709eb036857efb66 Mon Sep 17 00:00:00 2001
From: Rohit Waghchaure <rohitw1991@gmail.com>
Date: Tue, 29 Jul 2025 17:49:46 +0530
Subject: [PATCH] fix: serial no warehouse for backdated stock reco

(cherry picked from commit 1deedc766c78b7ef2179d831df7d667860e9b4fa)
---
 .../test_stock_reconciliation.py              | 76 +++++++++++++++++++
 erpnext/stock/serial_batch_bundle.py          |  2 +-
 2 files changed, 77 insertions(+), 1 deletion(-)

diff --git a/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py b/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
index 1fcbd73b49a..51cf4a34943 100644
--- a/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
+++ b/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
@@ -1514,6 +1514,82 @@ class TestStockReconciliation(FrappeTestCase, StockTestMixin):
 
 		self.assertTrue(len(stock_ledgers) == 2)
 
+	def test_serial_no_backdated_stock_reco(self):
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+		serial_item = self.make_item(
+			"Test Serial Item Stock Reco Backdated",
+			{
+				"is_stock_item": 1,
+				"has_serial_no": 1,
+				"serial_no_series": "TSISRB.####",
+			},
+		).name
+
+		warehouse = "_Test Warehouse - _TC"
+
+		se = make_stock_entry(
+			item_code=serial_item,
+			target=warehouse,
+			qty=1,
+			basic_rate=100,
+			use_serial_batch_fields=1,
+		)
+
+		serial_no = get_serial_nos_from_bundle(se.items[0].serial_and_batch_bundle)[0]
+		status = frappe.get_value(
+			"Serial No",
+			serial_no,
+			"status",
+		)
+
+		self.assertTrue(status == "Active")
+
+		sr = create_stock_reconciliation(
+			item_code=serial_item,
+			warehouse=warehouse,
+			qty=1,
+			rate=200,
+			use_serial_batch_fields=1,
+			serial_no=serial_no,
+		)
+
+		sr.reload()
+
+		status = frappe.get_value(
+			"Serial No",
+			serial_no,
+			"status",
+		)
+
+		self.assertTrue(status == "Active")
+
+		make_stock_entry(
+			item_code=serial_item,
+			source=warehouse,
+			qty=1,
+			basic_rate=100,
+			use_serial_batch_fields=1,
+		)
+
+		status = frappe.get_value(
+			"Serial No",
+			serial_no,
+			"status",
+		)
+
+		self.assertFalse(status == "Active")
+
+		sr.cancel()
+
+		status = frappe.get_value(
+			"Serial No",
+			serial_no,
+			"status",
+		)
+
+		self.assertFalse(status == "Active")
+
 
 def create_batch_item_with_batch(item_name, batch_id):
 	batch_item_doc = create_item(item_name, is_stock_item=1)
diff --git a/erpnext/stock/serial_batch_bundle.py b/erpnext/stock/serial_batch_bundle.py
index 21a45f352cd..3e3f2bcdf69 100644
--- a/erpnext/stock/serial_batch_bundle.py
+++ b/erpnext/stock/serial_batch_bundle.py
@@ -359,7 +359,7 @@ class SerialBatchBundle:
 		self.update_serial_no_status_warehouse(self.sle, serial_nos)
 
 	def update_serial_no_status_warehouse(self, sle, serial_nos):
-		warehouse = self.warehouse if sle.actual_qty > 0 else None
+		warehouse = sle.warehouse if sle.actual_qty > 0 else None
 
 		if isinstance(serial_nos, str):
 			serial_nos = [serial_nos]