From 000135a3d4ed833c0d1363d2514294ca249f2d0e Mon Sep 17 00:00:00 2001
From: Rohit Waghchaure <rohitw1991@gmail.com>
Date: Wed, 3 Sep 2025 15:58:30 +0530
Subject: [PATCH] fix: incorrect batch qty

---
 .../test_stock_reconciliation.py              | 74 +++++++++++++++++++
 erpnext/stock/stock_ledger.py                 | 14 +++-
 2 files changed, 87 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 4974fbb5063..98e369a01a8 100644
--- a/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
+++ b/erpnext/stock/doctype/stock_reconciliation/test_stock_reconciliation.py
@@ -1591,6 +1591,80 @@ class TestStockReconciliation(IntegrationTestCase, StockTestMixin):
 
 		self.assertFalse(status == "Active")
 
+	def test_stock_reconciliation_for_batch_with_backward(self):
+		# Make stock inward for 10 -> Stock Reco for 20 after two days
+		# Make backdated delivery note for 10 qty between stock inward and stock reco
+		# Check the state of the current serial and batch bundle in the stock reco
+		# The state should be cancelled
+
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+		item_code = "Test Stock Reco for Batch with Backward"
+
+		self.make_item(
+			item_code, {"has_batch_no": 1, "create_new_batch": 1, "batch_number_series": "BCN-CB.#####"}
+		)
+
+		warehouse = "_Test Warehouse - _TC"
+
+		se = make_stock_entry(
+			posting_date=add_days(nowdate(), -2),
+			posting_time="02:00",
+			item_code=item_code,
+			target=warehouse,
+			qty=10,
+			basic_rate=100,
+		)
+
+		batch_no = get_batch_from_bundle(se.items[0].serial_and_batch_bundle)
+
+		sr = create_stock_reconciliation(
+			item_code=item_code,
+			warehouse=warehouse,
+			qty=20,
+			rate=200,
+			use_serial_batch_fields=1,
+			batch_no=batch_no,
+			posting_date=nowdate(),
+			posting_time="03:00",
+		)
+
+		current_sabb = sr.items[0].current_serial_and_batch_bundle
+
+		self.assertTrue(frappe.db.get_value("Serial and Batch Bundle", current_sabb, "docstatus") == 1)
+
+		self.assertTrue(
+			frappe.db.get_value(
+				"Stock Ledger Entry", {"serial_and_batch_bundle": current_sabb, "is_cancelled": 0}, "name"
+			)
+		)
+		self.assertTrue(sr.items[0].current_serial_and_batch_bundle)
+		self.assertTrue(sr.items[0].current_qty)
+		self.assertTrue(sr.items[0].current_qty == 10)
+
+		se = make_stock_entry(
+			posting_date=add_days(nowdate(), -1),
+			posting_time="02:00",
+			item_code=item_code,
+			source=warehouse,
+			qty=10,
+			basic_rate=100,
+			use_serial_batch_fields=1,
+			batch_no=batch_no,
+		)
+
+		sr.reload()
+		self.assertFalse(sr.items[0].current_serial_and_batch_bundle)
+		self.assertTrue(sr.items[0].current_qty == 0)
+
+		self.assertFalse(frappe.db.get_value("Serial and Batch Bundle", current_sabb, "docstatus") == 1)
+
+		self.assertFalse(
+			frappe.db.get_value(
+				"Stock Ledger Entry", {"serial_and_batch_bundle": current_sabb, "is_cancelled": 0}, "name"
+			)
+		)
+
 
 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/stock_ledger.py b/erpnext/stock/stock_ledger.py
index fbb74cd8f24..985ef099c6a 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -978,10 +978,12 @@ class update_entries_after:
 				self.wh_data.valuation_rate = self.get_fallback_rate(sle)
 
 	def reset_actual_qty_for_stock_reco(self, sle):
-		doc = frappe.get_cached_doc("Stock Reconciliation", sle.voucher_no)
+		doc = frappe.get_doc("Stock Reconciliation", sle.voucher_no)
 		doc.recalculate_current_qty(sle.voucher_detail_no, sle.creation, sle.actual_qty > 0)
 
 		if sle.actual_qty < 0:
+			doc.reload()
+
 			sle.actual_qty = (
 				flt(frappe.db.get_value("Stock Reconciliation Item", sle.voucher_detail_no, "current_qty"))
 				* -1
@@ -990,6 +992,16 @@ class update_entries_after:
 			if abs(sle.actual_qty) == 0.0:
 				sle.is_cancelled = 1
 
+				if sle.serial_and_batch_bundle:
+					for row in doc.items:
+						if row.name == sle.voucher_detail_no:
+							row.db_set("current_serial_and_batch_bundle", "")
+
+					sabb_doc = frappe.get_doc("Serial and Batch Bundle", sle.serial_and_batch_bundle)
+					sabb_doc.voucher_detail_no = None
+					sabb_doc.voucher_no = None
+					sabb_doc.cancel()
+
 		if sle.serial_and_batch_bundle and frappe.get_cached_value("Item", sle.item_code, "has_serial_no"):
 			self.update_serial_no_status(sle)