chore(release): Bumped to Version 14.86.4

## [14.86.4](https://github.com/frappe/erpnext/compare/v14.86.3...v14.86.4) (2025-06-27)

### Bug Fixes

* do not allow backdated transactions against serial numbers. ([#48281](https://github.com/frappe/erpnext/issues/48281)) ([1393100](1393100a62))

erpnext/__init__.py

@@ -3,7 +3,7 @@ import inspect
 
 import frappe
 
-__version__ = "14.67.1"
+__version__ = "14.86.4"
 
 
 def get_default_company(user=None):

erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py

@@ -2761,6 +2761,63 @@ class TestPurchaseReceipt(FrappeTestCase):
 		pr.reload()
 		self.assertEqual(pr.status, "To Bill")
 
+	def test_serial_no_exists_in_future(self):
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+
+		item_doc = make_item(
+			"Test Serial No Item Exists in Future",
+			{
+				"is_purchase_item": 1,
+				"is_stock_item": 1,
+				"has_serial_no": 1,
+				"serial_no_series": "SN-SBNS-.#####",
+			},
+		)
+
+		source_warehouse = "_Test Warehouse - _TC"
+		target_warehouse = "_Test Warehouse 1 - _TC"
+		if not frappe.db.exists("Warehouse", target_warehouse):
+			create_warehouse("_Test Warehouse 1")
+
+		make_purchase_receipt(
+			item_code=item_doc.name,
+			qty=1,
+			rate=100,
+			serial_no="SN-SBNS-00001",
+			posting_date=add_days(today(), -2),
+		)
+
+		make_stock_entry(
+			item_code=item_doc.name,
+			qty=1,
+			rate=100,
+			to_warehouse=target_warehouse,
+			serial_no="SN-SBNS-00002",
+			posting_date=add_days(today(), -1),
+		)
+
+		make_stock_entry(
+			item_code=item_doc.name,
+			qty=1,
+			rate=100,
+			from_warehouse=source_warehouse,
+			to_warehouse=target_warehouse,
+			serial_no="SN-SBNS-00001",
+			posting_date=today(),
+		)
+
+		se = make_stock_entry(
+			item_code=item_doc.name,
+			qty=1,
+			rate=100,
+			from_warehouse=target_warehouse,
+			serial_no="SN-SBNS-00001",
+			posting_date=add_days(today(), -1),
+			do_not_submit=True,
+		)
+
+		self.assertRaises(frappe.ValidationError, se.submit)
+
 
 def prepare_data_for_internal_transfer():
 	from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_internal_supplier

erpnext/stock/doctype/serial_no/serial_no.py

@@ -8,7 +8,18 @@ import frappe
 from frappe import ValidationError, _
 from frappe.model.naming import make_autoname
 from frappe.query_builder.functions import Coalesce
-from frappe.utils import add_days, cint, cstr, flt, get_link_to_form, getdate, now, nowdate, safe_json_loads
+from frappe.utils import (
+	add_days,
+	cint,
+	cstr,
+	flt,
+	get_datetime,
+	get_link_to_form,
+	getdate,
+	now,
+	nowdate,
+	safe_json_loads,
+)
 
 from erpnext.controllers.stock_controller import StockController
 from erpnext.stock.get_item_details import get_reserved_qty_for_so
@@ -197,7 +208,7 @@ class SerialNo(StockController):
 		for sle in frappe.db.sql(
 			"""
 			SELECT voucher_type, voucher_no,
-				posting_date, posting_time, incoming_rate, actual_qty, serial_no
+				posting_date, posting_time, incoming_rate, actual_qty, serial_no, posting_datetime
 			FROM
 				`tabStock Ledger Entry`
 			WHERE
@@ -251,8 +262,23 @@ class SerialNo(StockController):
 				_("Cannot delete Serial No {0}, as it is used in stock transactions").format(self.name)
 			)
 
-	def update_serial_no_reference(self, serial_no=None):
+	def update_serial_no_reference(self, serial_no=None, sle=None):
 		last_sle = self.get_last_sle(serial_no)
+
+		_last_sle_dict = last_sle.get("last_sle")
+		if (
+			_last_sle_dict
+			and sle.get("voucher_type") != "Stock Reconciliation"
+			and sle.get("voucher_no") != _last_sle_dict.get("voucher_no")
+			and get_datetime(sle.get("posting_datetime"))
+			< get_datetime(_last_sle_dict.get("posting_datetime"))
+		):
+			frappe.throw(
+				_(
+					"You can not complete this transaction because a future transaction exists for the serial number {0}"
+				).format(serial_no)
+			)
+
 		self.set_purchase_details(last_sle.get("purchase_sle"))
 		self.set_sales_details(last_sle.get("delivery_sle"))
 		self.set_maintenance_status()
@@ -770,7 +796,7 @@ def update_args_for_serial_no(serial_no_doc, serial_no, args, is_new=False):
 		serial_no_doc.sales_order = None
 
 	serial_no_doc.validate_item()
-	serial_no_doc.update_serial_no_reference(serial_no)
+	serial_no_doc.update_serial_no_reference(serial_no, sle=args)
 
 	if is_new:
 		serial_no_doc.db_insert()