feat: sync serial no status from stock ledger in Stock Qty vs Serial No Count report (version-16-hotfix) (#57864)

* feat: sync serial no status from stock ledger in Stock Qty vs Serial No Count report

* fix: pick last bundle move in SQL ordered by posting datetime and SLE creation

* fix: derive synced serial no status from stock ledger helper and validate sync args

erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.js

@@ -2,6 +2,30 @@
 // For license information, please see license.txt
 
 frappe.query_reports["Stock Qty vs Serial No Count"] = {
+	onload: function (report) {
+		report.page.add_inner_button(__("Sync Serial No Status"), () => {
+			const warehouse = report.get_filter_value("warehouse");
+			if (!warehouse) {
+				frappe.msgprint(__("Please select a warehouse first."));
+				return;
+			}
+
+			frappe.confirm(
+				__(
+					"This will update the warehouse and status of Serial Nos counted in {0} to match the stock ledger. Continue?",
+					[warehouse.bold()]
+				),
+				() => {
+					frappe.call({
+						method: "erpnext.stock.report.stock_qty_vs_serial_no_count.stock_qty_vs_serial_no_count.sync_serial_no_status",
+						args: { warehouse: warehouse },
+						freeze: true,
+					});
+				}
+			);
+		});
+	},
+
 	filters: [
 		{
 			fieldname: "company",

erpnext/stock/report/stock_qty_vs_serial_no_count/stock_qty_vs_serial_no_count.py

@@ -4,6 +4,12 @@
 
 import frappe
 from frappe import _
+from frappe.query_builder import Order
+from frappe.query_builder.functions import Coalesce
+from frappe.utils import cstr, flt
+from pypika import analytics as an
+
+from erpnext.stock.serial_batch_bundle import get_serial_no_status
 
 
 def execute(filters=None):
@@ -77,3 +83,172 @@ def get_data(warehouse, show_disabled_items):
 		data.append(row)
 
 	return data
+
+
+SYNC_CHUNK_SIZE = 1000
+
+
+@frappe.whitelist(methods=["POST"])
+def sync_serial_no_status(warehouse: str, item_code: str | None = None):
+	if not frappe.has_permission("Serial No", "write"):
+		frappe.throw(_("Not permitted to update Serial No"), frappe.PermissionError)
+
+	warehouse = cstr(warehouse)
+	item_code = cstr(item_code) if item_code else None
+	if not frappe.db.exists("Warehouse", warehouse):
+		frappe.throw(_("Warehouse {0} does not exist").format(warehouse))
+
+	if item_code and not frappe.db.exists("Item", item_code):
+		frappe.throw(_("Item {0} does not exist").format(item_code))
+
+	frappe.enqueue(
+		sync_serial_no_status_for_warehouse,
+		queue="long",
+		warehouse=warehouse,
+		item_code=item_code,
+	)
+	frappe.msgprint(
+		_("Serial No status sync has been queued. Reload the report after a few minutes."),
+		alert=True,
+	)
+
+
+def sync_serial_no_status_for_warehouse(warehouse, item_code=None):
+	filters = {"has_serial_no": 1}
+	if item_code:
+		filters["name"] = item_code
+
+	for item in frappe.get_all("Item", filters=filters, pluck="name"):
+		sync_serial_no_status_for_item(item, warehouse)
+
+
+def sync_serial_no_status_for_item(item_code, warehouse):
+	"""Correct Serial No records this report counts in the warehouse but whose last
+	stock ledger movement says the stock left it. Reposting rebuilds qty and valuation
+	from the ledger but never rewrites Serial No warehouse/status, so records orphaned
+	by cancelled or amended vouchers keep inflating the serial count."""
+	serial_nos = frappe.get_all(
+		"Serial No",
+		filters={"item_code": item_code, "warehouse": warehouse, "status": ("in", ["Active", "Expired"])},
+		pluck="name",
+	)
+	if not serial_nos:
+		return
+
+	last_moves = get_last_ledger_moves(item_code, serial_nos)
+	for serial_no in serial_nos:
+		row = last_moves.get(serial_no)
+		if row and flt(row.qty) > 0 and row.warehouse == warehouse:
+			continue
+
+		set_serial_no_state_from_ledger(serial_no, row)
+
+
+def set_serial_no_state_from_ledger(serial_no, row):
+	if not row:
+		frappe.db.set_value(
+			"Serial No", serial_no, {"warehouse": None, "status": "Inactive"}, update_modified=False
+		)
+		return
+
+	status = get_serial_no_status(
+		frappe._dict(
+			actual_qty=flt(row.qty),
+			warehouse=row.warehouse,
+			voucher_type=row.voucher_type,
+			voucher_no=row.voucher_no,
+			is_cancelled=0,
+		)
+	)
+	warehouse = row.warehouse if status == "Active" else None
+	frappe.db.set_value(
+		"Serial No", serial_no, {"warehouse": warehouse, "status": status}, update_modified=False
+	)
+
+
+def get_last_ledger_moves(item_code, serial_nos):
+	last_moves = get_last_bundle_moves(item_code, serial_nos)
+	if missing := [serial_no for serial_no in serial_nos if serial_no not in last_moves]:
+		set_legacy_last_moves(item_code, missing, last_moves)
+
+	return last_moves
+
+
+def get_last_bundle_moves(item_code, serial_nos):
+	last_moves = {}
+	for start in range(0, len(serial_nos), SYNC_CHUNK_SIZE):
+		for row in get_last_bundle_moves_chunk(item_code, serial_nos[start : start + SYNC_CHUNK_SIZE]):
+			last_moves[row.serial_no] = row
+
+	return last_moves
+
+
+def get_last_bundle_moves_chunk(item_code, serial_nos):
+	"""A bundle can be created much before its Stock Ledger Entry, so same-posting-datetime
+	ties are broken on the creation of the bundle's own SLE. The SLE join also keeps only
+	real stock movements - reservation bundles (Pick List) carry no SLE."""
+	entry = frappe.qb.DocType("Serial and Batch Entry")
+	bundle = frappe.qb.DocType("Serial and Batch Bundle")
+	sle = frappe.qb.DocType("Stock Ledger Entry")
+
+	row_number = (
+		an.RowNumber()
+		.over(entry.serial_no)
+		.orderby(Coalesce(entry.posting_datetime, bundle.posting_datetime), order=Order.desc)
+		.orderby(sle.creation, order=Order.desc)
+	)
+
+	ranked = (
+		frappe.qb.from_(entry)
+		.inner_join(bundle)
+		.on(entry.parent == bundle.name)
+		.inner_join(sle)
+		.on(sle.serial_and_batch_bundle == bundle.name)
+		.select(
+			entry.serial_no,
+			entry.qty,
+			Coalesce(entry.warehouse, bundle.warehouse).as_("warehouse"),
+			bundle.voucher_type,
+			bundle.voucher_no,
+			row_number.as_("row_no"),
+		)
+		.where(
+			(bundle.docstatus == 1)
+			& (Coalesce(bundle.is_cancelled, 0) == 0)
+			& (sle.is_cancelled == 0)
+			& (bundle.item_code == item_code)
+			& (entry.serial_no.isin(serial_nos))
+		)
+	).as_("ranked")
+
+	return (
+		frappe.qb.from_(ranked)
+		.select(ranked.serial_no, ranked.qty, ranked.warehouse, ranked.voucher_type, ranked.voucher_no)
+		.where(ranked.row_no == 1)
+		.run(as_dict=True)
+	)
+
+
+def set_legacy_last_moves(item_code, serial_nos, last_moves):
+	"""Movements posted before Serial and Batch Bundle exist only as newline-separated
+	text on Stock Ledger Entry."""
+	from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos
+
+	pending = set(serial_nos)
+	rows = frappe.get_all(
+		"Stock Ledger Entry",
+		filters={"item_code": item_code, "is_cancelled": 0, "serial_no": ("is", "set")},
+		fields=["serial_no", "actual_qty", "warehouse", "voucher_type", "voucher_no"],
+		order_by="posting_datetime asc, creation asc",
+	)
+
+	for row in rows:
+		qty = 1 if flt(row.actual_qty) > 0 else -1
+		for serial_no in get_serial_nos(row.serial_no):
+			if serial_no in pending:
+				last_moves[serial_no] = frappe._dict(
+					qty=qty,
+					warehouse=row.warehouse,
+					voucher_type=row.voucher_type,
+					voucher_no=row.voucher_no,
+				)

erpnext/stock/report/stock_qty_vs_serial_no_count/test_stock_qty_vs_serial_no_count.py

@@ -0,0 +1,41 @@
+# Copyright (c) 2026, Frappe Technologies Pvt. Ltd. and Contributors
+# See license.txt
+
+import frappe
+
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
+from erpnext.tests.utils import ERPNextTestSuite
+
+
+class TestStockQtyVsSerialNoCount(ERPNextTestSuite):
+	def test_sync_serial_no_status(self):
+		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+		from erpnext.stock.report.stock_qty_vs_serial_no_count.stock_qty_vs_serial_no_count import (
+			sync_serial_no_status_for_warehouse,
+		)
+
+		item = "_Test Serialized Item With Series"
+		warehouse = "Stores - _TC"
+		se = make_stock_entry(item_code=item, to_warehouse=warehouse, qty=2, rate=100)
+		serial_no = frappe.get_all(
+			"Serial and Batch Entry",
+			{"parent": se.items[0].serial_and_batch_bundle},
+			pluck="serial_no",
+		)[0]
+
+		create_delivery_note(
+			item_code=item,
+			warehouse=warehouse,
+			qty=1,
+			serial_no=serial_no,
+			use_serial_batch_fields=1,
+		)
+		self.assertEqual(frappe.db.get_value("Serial No", serial_no, "status"), "Delivered")
+
+		frappe.db.set_value("Serial No", serial_no, {"status": "Active", "warehouse": warehouse})
+
+		sync_serial_no_status_for_warehouse(warehouse, item_code=item)
+
+		details = frappe.db.get_value("Serial No", serial_no, ["status", "warehouse"], as_dict=True)
+		self.assertEqual(details.status, "Delivered")
+		self.assertFalse(details.warehouse)