diff --git a/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py b/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
index f3351ddcba4..317fcc02b50 100644
--- a/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
+++ b/erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py
@@ -232,7 +232,7 @@ def reconcile_vouchers(bank_transaction_name, vouchers):
 		}), transaction.currency, company_account)
 
 	if total_amount > transaction.unallocated_amount:
-		frappe.throw(_("The Sum Total of Amounts of All Selected Vouchers Should be Less than the Unallocated Amount of the Bank Transaction"))
+		frappe.throw(_("The sum total of amounts of all selected vouchers should be less than the unallocated amount of the bank transaction"))
 	account = frappe.db.get_value("Bank Account", transaction.bank_account, "account")
 
 	for voucher in vouchers:
diff --git a/erpnext/accounts/doctype/bank_transaction/bank_transaction.py b/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
index a476cab55f7..a924df78412 100644
--- a/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
+++ b/erpnext/accounts/doctype/bank_transaction/bank_transaction.py
@@ -110,8 +110,13 @@ def get_paid_amount(payment_entry, currency, bank_account):
 		paid_amount_field = "paid_amount"
 		if payment_entry.payment_document == 'Payment Entry':
 			doc = frappe.get_doc("Payment Entry", payment_entry.payment_entry)
-			paid_amount_field = ("base_paid_amount"
-				if doc.paid_to_account_currency == currency else "paid_amount")
+
+			if doc.payment_type == 'Receive':
+				paid_amount_field = ("received_amount"
+					if doc.paid_to_account_currency == currency else "base_received_amount")
+			elif doc.payment_type == 'Pay':
+				paid_amount_field = ("paid_amount"
+					if doc.paid_to_account_currency == currency else "base_paid_amount")
 
 		return frappe.db.get_value(payment_entry.payment_document,
 			payment_entry.payment_entry, paid_amount_field)
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 573da276a2a..54217fba83a 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -42,7 +42,11 @@ from erpnext.projects.doctype.timesheet.timesheet import get_projectwise_timeshe
 from erpnext.setup.doctype.company.company import update_company_current_month_sales
 from erpnext.stock.doctype.batch.batch import set_batch_nos
 from erpnext.stock.doctype.delivery_note.delivery_note import update_billed_amount_based_on_so
-from erpnext.stock.doctype.serial_no.serial_no import get_delivery_note_serial_no, get_serial_nos
+from erpnext.stock.doctype.serial_no.serial_no import (
+	get_delivery_note_serial_no,
+	get_serial_nos,
+	update_serial_nos_after_submit,
+)
 from erpnext.stock.utils import calculate_mapped_packed_items_return
 
 form_grid_templates = {
@@ -226,6 +230,9 @@ class SalesInvoice(SellingController):
 		# because updating reserved qty in bin depends upon updated delivered qty in SO
 		if self.update_stock == 1:
 			self.update_stock_ledger()
+		if self.is_return and self.update_stock:
+			update_serial_nos_after_submit(self, "items")
+
 
 		# this sequence because outstanding may get -ve
 		self.make_gl_entries()
@@ -1255,14 +1262,14 @@ class SalesInvoice(SellingController):
 	def update_billing_status_in_dn(self, update_modified=True):
 		updated_delivery_notes = []
 		for d in self.get("items"):
-			if d.so_detail:
-				updated_delivery_notes += update_billed_amount_based_on_so(d.so_detail, update_modified)
-			elif d.dn_detail:
+			if d.dn_detail:
 				billed_amt = frappe.db.sql("""select sum(amount) from `tabSales Invoice Item`
 					where dn_detail=%s and docstatus=1""", d.dn_detail)
 				billed_amt = billed_amt and billed_amt[0][0] or 0
 				frappe.db.set_value("Delivery Note Item", d.dn_detail, "billed_amt", billed_amt, update_modified=update_modified)
 				updated_delivery_notes.append(d.delivery_note)
+			elif d.so_detail:
+				updated_delivery_notes += update_billed_amount_based_on_so(d.so_detail, update_modified)
 
 		for dn in set(updated_delivery_notes):
 			frappe.get_doc("Delivery Note", dn).update_billing_percentage(update_modified=update_modified)
diff --git a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
index 6d929e4386f..62c3508ab00 100644
--- a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
@@ -2615,6 +2615,12 @@ class TestSalesInvoice(unittest.TestCase):
 
 		frappe.db.set_value('Accounts Settings', None, 'acc_frozen_upto', None)
 
+	def test_standalone_serial_no_return(self):
+		si = create_sales_invoice(item_code="_Test Serialized Item With Series", update_stock=True, is_return=True, qty=-1)
+		si.reload()
+		self.assertTrue(si.items[0].serial_no)
+
+
 def get_sales_invoice_for_e_invoice():
 	si = make_sales_invoice_for_ewaybill()
 	si.naming_series = 'INV-2020-.#####'
diff --git a/erpnext/accounts/doctype/shipping_rule/shipping_rule.py b/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
index 792e7d21a78..7e5129911e4 100644
--- a/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
+++ b/erpnext/accounts/doctype/shipping_rule/shipping_rule.py
@@ -71,8 +71,7 @@ class ShippingRule(Document):
 		if doc.currency != doc.company_currency:
 			shipping_amount = flt(shipping_amount / doc.conversion_rate, 2)
 
-		if shipping_amount:
-			self.add_shipping_rule_to_tax_table(doc, shipping_amount)
+		self.add_shipping_rule_to_tax_table(doc, shipping_amount)
 
 	def get_shipping_amount_from_rules(self, value):
 		for condition in self.get("conditions"):
diff --git a/erpnext/buying/report/requested_items_to_order_and_receive/test_requested_items_to_order_and_receive.py b/erpnext/buying/report/requested_items_to_order_and_receive/test_requested_items_to_order_and_receive.py
index f3c751c5c3c..a533da00e3a 100644
--- a/erpnext/buying/report/requested_items_to_order_and_receive/test_requested_items_to_order_and_receive.py
+++ b/erpnext/buying/report/requested_items_to_order_and_receive/test_requested_items_to_order_and_receive.py
@@ -17,8 +17,8 @@ class TestRequestedItemsToOrderAndReceive(FrappeTestCase):
 	def setUp(self) -> None:
 		create_item("Test MR Report Item")
 		self.setup_material_request() # to order and receive
-		self.setup_material_request(order=True) # to receive (ordered)
-		self.setup_material_request(order=True, receive=True) # complete (ordered & received)
+		self.setup_material_request(order=True, days=1) # to receive (ordered)
+		self.setup_material_request(order=True, receive=True, days=2) # complete (ordered & received)
 
 		self.filters = frappe._dict(
 			company="_Test Company", from_date=today(), to_date=add_days(today(), 30),
@@ -32,9 +32,8 @@ class TestRequestedItemsToOrderAndReceive(FrappeTestCase):
 		data = get_data(self.filters)
 		self.assertEqual(len(data), 2) # MRs today should be fetched
 
-		self.filters.from_date = add_days(today(), 1)
-		data = get_data(self.filters)
-		self.assertEqual(len(data), 0) # MRs today should not be fetched as from date is tomorrow
+		data = get_data(self.filters.update({"from_date": add_days(today(), 10)}))
+		self.assertEqual(len(data), 0) # MRs today should not be fetched as from date is in future
 
 	def test_ordered_received_material_requests(self):
 		data = get_data(self.filters)
@@ -44,19 +43,19 @@ class TestRequestedItemsToOrderAndReceive(FrappeTestCase):
 		self.assertEqual(data[0].ordered_qty, 0.0)
 		self.assertEqual(data[1].ordered_qty, 57.0)
 
-	def setup_material_request(self, order=False, receive=False):
+	def setup_material_request(self, order=False, receive=False, days=0):
 		po = None
 		test_records = frappe.get_test_records('Material Request')
 
 		mr = frappe.copy_doc(test_records[0])
-		mr.transaction_date = today()
-		mr.schedule_date = add_days(today(), 1)
+		mr.transaction_date = add_days(today(), days)
+		mr.schedule_date = add_days(mr.transaction_date, 1)
 		for row in mr.items:
 			row.item_code = "Test MR Report Item"
 			row.item_name = "Test MR Report Item"
 			row.description = "Test MR Report Item"
 			row.uom = "Nos"
-			row.schedule_date = add_days(today(), 1)
+			row.schedule_date = mr.schedule_date
 		mr.submit()
 
 		if order or receive:
diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index 8c3aab442bb..21666336e03 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -208,10 +208,15 @@ def get_already_returned_items(doc):
 
 	return items
 
-def get_returned_qty_map_for_row(row_name, doctype):
+def get_returned_qty_map_for_row(return_against, party, row_name, doctype):
 	child_doctype = doctype + " Item"
 	reference_field = "dn_detail" if doctype == "Delivery Note" else frappe.scrub(child_doctype)
 
+	if doctype in ('Purchase Receipt', 'Purchase Invoice'):
+		party_type = 'supplier'
+	else:
+		party_type = 'customer'
+
 	fields = [
 		"sum(abs(`tab{0}`.qty)) as qty".format(child_doctype),
 		"sum(abs(`tab{0}`.stock_qty)) as stock_qty".format(child_doctype)
@@ -226,9 +231,12 @@ def get_returned_qty_map_for_row(row_name, doctype):
 		if doctype == "Purchase Receipt":
 			fields += ["sum(abs(`tab{0}`.received_stock_qty)) as received_stock_qty".format(child_doctype)]
 
+	# Used retrun against and supplier and is_retrun because there is an index added for it
 	data = frappe.db.get_list(doctype,
 		fields = fields,
 		filters = [
+			[doctype, "return_against", "=", return_against],
+			[doctype, party_type, "=", party],
 			[doctype, "docstatus", "=", 1],
 			[doctype, "is_return", "=", 1],
 			[child_doctype, reference_field, "=", row_name]
@@ -307,7 +315,7 @@ def make_return_doc(doctype, source_name, target_doc=None):
 				target_doc.serial_no = '\n'.join(serial_nos)
 
 		if doctype == "Purchase Receipt":
-			returned_qty_map = get_returned_qty_map_for_row(source_doc.name, doctype)
+			returned_qty_map = get_returned_qty_map_for_row(source_parent.name, source_parent.supplier, source_doc.name, doctype)
 			target_doc.received_qty = -1 * flt(source_doc.received_qty - (returned_qty_map.get('received_qty') or 0))
 			target_doc.rejected_qty = -1 * flt(source_doc.rejected_qty - (returned_qty_map.get('rejected_qty') or 0))
 			target_doc.qty = -1 * flt(source_doc.qty - (returned_qty_map.get('qty') or 0))
@@ -321,7 +329,7 @@ def make_return_doc(doctype, source_name, target_doc=None):
 			target_doc.purchase_receipt_item = source_doc.name
 
 		elif doctype == "Purchase Invoice":
-			returned_qty_map = get_returned_qty_map_for_row(source_doc.name, doctype)
+			returned_qty_map = get_returned_qty_map_for_row(source_parent.name, source_parent.supplier, source_doc.name, doctype)
 			target_doc.received_qty = -1 * flt(source_doc.received_qty - (returned_qty_map.get('received_qty') or 0))
 			target_doc.rejected_qty = -1 * flt(source_doc.rejected_qty - (returned_qty_map.get('rejected_qty') or 0))
 			target_doc.qty = -1 * flt(source_doc.qty - (returned_qty_map.get('qty') or 0))
@@ -335,7 +343,7 @@ def make_return_doc(doctype, source_name, target_doc=None):
 			target_doc.purchase_invoice_item = source_doc.name
 
 		elif doctype == "Delivery Note":
-			returned_qty_map = get_returned_qty_map_for_row(source_doc.name, doctype)
+			returned_qty_map = get_returned_qty_map_for_row(source_parent.name, source_parent.customer, source_doc.name, doctype)
 			target_doc.qty = -1 * flt(source_doc.qty - (returned_qty_map.get('qty') or 0))
 			target_doc.stock_qty = -1 * flt(source_doc.stock_qty - (returned_qty_map.get('stock_qty') or 0))
 
@@ -348,7 +356,7 @@ def make_return_doc(doctype, source_name, target_doc=None):
 			if default_warehouse_for_sales_return:
 				target_doc.warehouse = default_warehouse_for_sales_return
 		elif doctype == "Sales Invoice" or doctype == "POS Invoice":
-			returned_qty_map = get_returned_qty_map_for_row(source_doc.name, doctype)
+			returned_qty_map = get_returned_qty_map_for_row(source_parent.name, source_parent.customer, source_doc.name, doctype)
 			target_doc.qty = -1 * flt(source_doc.qty - (returned_qty_map.get('qty') or 0))
 			target_doc.stock_qty = -1 * flt(source_doc.stock_qty - (returned_qty_map.get('stock_qty') or 0))
 
diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index a1bb6670c42..d362cdde110 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -37,6 +37,8 @@ class calculate_taxes_and_totals(object):
 			self.set_discount_amount()
 			self.apply_discount_amount()
 
+		self.calculate_shipping_charges()
+
 		if self.doc.doctype in ["Sales Invoice", "Purchase Invoice"]:
 			self.calculate_total_advance()
 
@@ -50,7 +52,6 @@ class calculate_taxes_and_totals(object):
 		self.initialize_taxes()
 		self.determine_exclusive_rate()
 		self.calculate_net_total()
-		self.calculate_shipping_charges()
 		self.calculate_taxes()
 		self.manipulate_grand_total_for_inclusive_tax()
 		self.calculate_totals()
@@ -276,6 +277,8 @@ class calculate_taxes_and_totals(object):
 			shipping_rule = frappe.get_doc("Shipping Rule", self.doc.shipping_rule)
 			shipping_rule.apply(self.doc)
 
+			self._calculate()
+
 	def calculate_taxes(self):
 		rounding_adjustment_computed = self.doc.get('is_consolidated') and self.doc.get('rounding_adjustment')
 		if not rounding_adjustment_computed:
diff --git a/erpnext/crm/doctype/lead/lead.py b/erpnext/crm/doctype/lead/lead.py
index c31b068a43f..33ec5521522 100644
--- a/erpnext/crm/doctype/lead/lead.py
+++ b/erpnext/crm/doctype/lead/lead.py
@@ -214,6 +214,7 @@ class Lead(SellingController):
 				})
 
 			contact.insert(ignore_permissions=True)
+			contact.reload() # load changes by hooks on contact
 
 			return contact
 
diff --git a/erpnext/loan_management/doctype/loan/loan.json b/erpnext/loan_management/doctype/loan/loan.json
index 196f36f0f46..ef78a640aa0 100644
--- a/erpnext/loan_management/doctype/loan/loan.json
+++ b/erpnext/loan_management/doctype/loan/loan.json
@@ -32,6 +32,8 @@
   "monthly_repayment_amount",
   "repayment_start_date",
   "is_term_loan",
+  "accounting_dimensions_section",
+  "cost_center",
   "account_info",
   "mode_of_payment",
   "disbursement_account",
@@ -366,12 +368,23 @@
    "options": "Account",
    "read_only": 1,
    "reqd": 1
+  },
+  {
+   "fieldname": "accounting_dimensions_section",
+   "fieldtype": "Section Break",
+   "label": "Accounting Dimensions"
+  },
+  {
+   "fieldname": "cost_center",
+   "fieldtype": "Link",
+   "label": "Cost Center",
+   "options": "Cost Center"
   }
  ],
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2022-01-25 16:29:16.325501",
+ "modified": "2022-03-10 11:50:31.957360",
  "modified_by": "Administrator",
  "module": "Loan Management",
  "name": "Loan",
diff --git a/erpnext/loan_management/doctype/loan/loan.py b/erpnext/loan_management/doctype/loan/loan.py
index b798e088b4f..0fe9947472b 100644
--- a/erpnext/loan_management/doctype/loan/loan.py
+++ b/erpnext/loan_management/doctype/loan/loan.py
@@ -25,6 +25,7 @@ class Loan(AccountsController):
 		self.set_loan_amount()
 		self.validate_loan_amount()
 		self.set_missing_fields()
+		self.validate_cost_center()
 		self.validate_accounts()
 		self.check_sanctioned_amount_limit()
 		self.validate_repay_from_salary()
@@ -45,6 +46,13 @@ class Loan(AccountsController):
 				frappe.throw(_("Account {0} does not belongs to company {1}").format(frappe.bold(self.get(fieldname)),
 					frappe.bold(self.company)))
 
+	def validate_cost_center(self):
+		if not self.cost_center and self.rate_of_interest != 0:
+			self.cost_center = frappe.db.get_value('Company', self.company, 'cost_center')
+
+		if not self.cost_center:
+			frappe.throw(_('Cost center is mandatory for loans having rate of interest greater than 0'))
+
 	def on_submit(self):
 		self.link_loan_security_pledge()
 
diff --git a/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py b/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
index 1c800a06da0..f6a3ededcbe 100644
--- a/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
+++ b/erpnext/loan_management/doctype/loan_interest_accrual/loan_interest_accrual.py
@@ -6,7 +6,6 @@ import frappe
 from frappe import _
 from frappe.utils import add_days, cint, date_diff, flt, get_datetime, getdate, nowdate
 
-import erpnext
 from erpnext.accounts.general_ledger import make_gl_entries
 from erpnext.controllers.accounts_controller import AccountsController
 
@@ -41,6 +40,8 @@ class LoanInterestAccrual(AccountsController):
 	def make_gl_entries(self, cancel=0, adv_adj=0):
 		gle_map = []
 
+		cost_center = frappe.db.get_value('Loan', self.loan, 'cost_center')
+
 		if self.interest_amount:
 			gle_map.append(
 				self.get_gl_dict({
@@ -54,7 +55,7 @@ class LoanInterestAccrual(AccountsController):
 					"against_voucher": self.loan,
 					"remarks": _("Interest accrued from {0} to {1} against loan: {2}").format(
 						self.last_accrual_date, self.posting_date, self.loan),
-					"cost_center": erpnext.get_default_cost_center(self.company),
+					"cost_center": cost_center,
 					"posting_date": self.posting_date
 				})
 			)
@@ -69,7 +70,7 @@ class LoanInterestAccrual(AccountsController):
 					"against_voucher": self.loan,
 					"remarks": ("Interest accrued from {0} to {1} against loan: {2}").format(
 						self.last_accrual_date, self.posting_date, self.loan),
-					"cost_center": erpnext.get_default_cost_center(self.company),
+					"cost_center": cost_center,
 					"posting_date": self.posting_date
 				})
 			)
diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 37d2b9ff978..a025ff740c6 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -2,6 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 import functools
+import re
 from collections import deque
 from operator import itemgetter
 from typing import List
@@ -103,25 +104,33 @@ class BOM(WebsiteGenerator):
 	)
 
 	def autoname(self):
-		names = frappe.db.sql_list("""select name from `tabBOM` where item=%s""", self.item)
+		# ignore amended documents while calculating current index
+		existing_boms = frappe.get_all(
+			"BOM",
+			filters={"item": self.item, "amended_from": ["is", "not set"]},
+			pluck="name"
+		)
 
-		if names:
-			# name can be BOM/ITEM/001, BOM/ITEM/001-1, BOM-ITEM-001, BOM-ITEM-001-1
-
-			# split by item
-			names = [name.split(self.item, 1) for name in names]
-			names = [d[-1][1:] for d in filter(lambda x: len(x) > 1 and x[-1], names)]
-
-			# split by (-) if cancelled
-			if names:
-				names = [cint(name.split('-')[-1]) for name in names]
-				idx = max(names) + 1
-			else:
-				idx = 1
+		if existing_boms:
+			index = self.get_next_version_index(existing_boms)
 		else:
-			idx = 1
+			index = 1
+
+		prefix = self.doctype
+		suffix = "%.3i" % index  # convert index to string (1 -> "001")
+		bom_name = f"{prefix}-{self.item}-{suffix}"
+
+		if len(bom_name) <= 140:
+			name = bom_name
+		else:
+			# since max characters for name is 140, remove enough characters from the
+			# item name to fit the prefix, suffix and the separators
+			truncated_length = 140 - (len(prefix) + len(suffix) + 2)
+			truncated_item_name = self.item[:truncated_length]
+			# if a partial word is found after truncate, remove the extra characters
+			truncated_item_name = truncated_item_name.rsplit(" ", 1)[0]
+			name = f"{prefix}-{truncated_item_name}-{suffix}"
 
-		name = 'BOM-' + self.item + ('-%.3i' % idx)
 		if frappe.db.exists("BOM", name):
 			conflicting_bom = frappe.get_doc("BOM", name)
 
@@ -134,6 +143,26 @@ class BOM(WebsiteGenerator):
 
 		self.name = name
 
+	@staticmethod
+	def get_next_version_index(existing_boms: List[str]) -> int:
+		# split by "/" and "-"
+		delimiters = ["/", "-"]
+		pattern = "|".join(map(re.escape, delimiters))
+		bom_parts = [re.split(pattern, bom_name) for bom_name in existing_boms]
+
+		# filter out BOMs that do not follow the following formats: BOM/ITEM/001, BOM-ITEM-001
+		valid_bom_parts = list(filter(lambda x: len(x) > 1 and x[-1], bom_parts))
+
+		# extract the current index from the BOM parts
+		if valid_bom_parts:
+			# handle cancelled and submitted documents
+			indexes = [cint(part[-1]) for part in valid_bom_parts]
+			index = max(indexes) + 1
+		else:
+			index = 1
+
+		return index
+
 	def validate(self):
 		self.route = frappe.scrub(self.name).replace('_', '-')
 
@@ -192,12 +221,13 @@ class BOM(WebsiteGenerator):
 		if self.routing:
 			self.set("operations", [])
 			fields = ["sequence_id", "operation", "workstation", "description",
-				"time_in_mins", "batch_size", "operating_cost", "idx", "hour_rate"]
+				"time_in_mins", "batch_size", "operating_cost", "idx", "hour_rate",
+				"set_cost_based_on_bom_qty", "fixed_time"]
 
 			for row in frappe.get_all("BOM Operation", fields = fields,
 				filters = {'parenttype': 'Routing', 'parent': self.routing}, order_by="sequence_id, idx"):
 				child = self.append('operations', row)
-				child.hour_rate = flt(row.hour_rate / self.conversion_rate, 2)
+				child.hour_rate = flt(row.hour_rate / self.conversion_rate, child.precision("hour_rate"))
 
 	def set_bom_material_details(self):
 		for item in self.get("items"):
diff --git a/erpnext/manufacturing/doctype/bom/test_bom.py b/erpnext/manufacturing/doctype/bom/test_bom.py
index 3cc91b341c6..4417123178c 100644
--- a/erpnext/manufacturing/doctype/bom/test_bom.py
+++ b/erpnext/manufacturing/doctype/bom/test_bom.py
@@ -432,6 +432,69 @@ class TestBOM(FrappeTestCase):
 		self.assertEqual(bom.transfer_material_against, "Work Order")
 		bom.delete()
 
+	def test_bom_name_length(self):
+		""" test >140 char names"""
+		bom_tree = {
+			"x" * 140 : {
+				" ".join(["abc"] * 35): {}
+			}
+		}
+		create_nested_bom(bom_tree, prefix="")
+
+	def test_version_index(self):
+
+		bom = frappe.new_doc("BOM")
+
+		version_index_test_cases = [
+			(1, []),
+			(1, ["BOM#XYZ"]),
+			(2, ["BOM/ITEM/001"]),
+			(2, ["BOM-ITEM-001"]),
+			(3, ["BOM-ITEM-001", "BOM-ITEM-002"]),
+			(4, ["BOM-ITEM-001", "BOM-ITEM-002", "BOM-ITEM-003"]),
+		]
+
+		for expected_index, existing_boms in version_index_test_cases:
+			with self.subTest():
+				self.assertEqual(expected_index, bom.get_next_version_index(existing_boms),
+						msg=f"Incorrect index for {existing_boms}")
+
+	def test_bom_versioning(self):
+		bom_tree = {
+			frappe.generate_hash(length=10) : {
+				frappe.generate_hash(length=10): {}
+			}
+		}
+		bom = create_nested_bom(bom_tree, prefix="")
+		self.assertEqual(int(bom.name.split("-")[-1]), 1)
+		original_bom_name = bom.name
+
+		bom.cancel()
+		bom.reload()
+		self.assertEqual(bom.name, original_bom_name)
+
+		# create a new amendment
+		amendment = frappe.copy_doc(bom)
+		amendment.docstatus = 0
+		amendment.amended_from = bom.name
+
+		amendment.save()
+		amendment.submit()
+		amendment.reload()
+
+		self.assertNotEqual(amendment.name, bom.name)
+		# `origname-001-1` version
+		self.assertEqual(int(amendment.name.split("-")[-1]), 1)
+		self.assertEqual(int(amendment.name.split("-")[-2]), 1)
+
+		# create a new version
+		version = frappe.copy_doc(amendment)
+		version.docstatus = 0
+		version.amended_from = None
+		version.save()
+		self.assertNotEqual(amendment.name, version.name)
+		self.assertEqual(int(version.name.split("-")[-1]), 2)
+
 
 def get_default_bom(item_code="_Test FG Item 2"):
 	return frappe.db.get_value("BOM", {"item": item_code, "is_active": 1, "is_default": 1})
diff --git a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
index c7be7efc9e1..341f9692c45 100644
--- a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
+++ b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
@@ -66,7 +66,8 @@
    "label": "Hour Rate",
    "oldfieldname": "hour_rate",
    "oldfieldtype": "Currency",
-   "options": "currency"
+   "options": "currency",
+   "precision": "2"
   },
   {
    "description": "In minutes",
@@ -186,7 +187,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-12-15 03:00:00.473173",
+ "modified": "2022-03-10 06:19:08.462027",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "BOM Operation",
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 13f0e7b872e..ebda8058e02 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -357,4 +357,5 @@ erpnext.patches.v13_0.set_work_order_qty_in_so_from_mr
 erpnext.patches.v13_0.update_accounts_in_loan_docs
 erpnext.patches.v14_0.update_batch_valuation_flag
 erpnext.patches.v14_0.delete_non_profit_doctypes
-erpnext.patches.v14_0.update_employee_advance_status
\ No newline at end of file
+erpnext.patches.v14_0.update_employee_advance_status
+erpnext.patches.v13_0.add_cost_center_in_loans
\ No newline at end of file
diff --git a/erpnext/patches/v13_0/add_cost_center_in_loans.py b/erpnext/patches/v13_0/add_cost_center_in_loans.py
new file mode 100644
index 00000000000..25e1722a4ff
--- /dev/null
+++ b/erpnext/patches/v13_0/add_cost_center_in_loans.py
@@ -0,0 +1,16 @@
+import frappe
+
+
+def execute():
+	frappe.reload_doc('loan_management', 'doctype', 'loan')
+	loan = frappe.qb.DocType('Loan')
+
+	for company in frappe.get_all('Company', pluck='name'):
+		default_cost_center = frappe.db.get_value('Company', company, 'cost_center')
+		frappe.qb.update(
+			loan
+		).set(
+			loan.cost_center, default_cost_center
+		).where(
+			loan.company == company
+		).run()
\ No newline at end of file
diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index ae0e2a3f6f8..9fec43b74ef 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -39,6 +39,8 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		this._calculate_taxes_and_totals();
 		this.calculate_discount_amount();
 
+		this.calculate_shipping_charges();
+
 		// Advance calculation applicable to Sales /Purchase Invoice
 		if(in_list(["Sales Invoice", "POS Invoice", "Purchase Invoice"], this.frm.doc.doctype)
 			&& this.frm.doc.docstatus < 2 && !this.frm.doc.is_return) {
@@ -81,7 +83,6 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		this.initialize_taxes();
 		this.determine_exclusive_rate();
 		this.calculate_net_total();
-		this.calculate_shipping_charges();
 		this.calculate_taxes();
 		this.manipulate_grand_total_for_inclusive_tax();
 		this.calculate_totals();
@@ -275,6 +276,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		frappe.model.round_floats_in(this.frm.doc, ["total", "base_total", "net_total", "base_net_total"]);
 		if (frappe.meta.get_docfield(this.frm.doc.doctype, "shipping_rule", this.frm.doc.name)) {
 			this.shipping_rule();
+			this._calculate_taxes_and_totals();
 		}
 	}
 
diff --git a/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py b/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
index cb79cf82866..d5ff88c7c90 100644
--- a/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
+++ b/erpnext/regional/doctype/gstr_3b_report/gstr_3b_report.py
@@ -127,7 +127,8 @@ class GSTR3BReport(Document):
 
 	def get_inward_nil_exempt(self, state):
 		inward_nil_exempt = frappe.db.sql("""
-			SELECT p.place_of_supply, sum(i.base_amount) as base_amount, i.is_nil_exempt, i.is_non_gst
+			SELECT p.place_of_supply, p.supplier_address,
+			i.base_amount, i.is_nil_exempt, i.is_non_gst
 			FROM `tabPurchase Invoice` p , `tabPurchase Invoice Item` i
 			WHERE p.docstatus = 1 and p.name = i.parent
 			and p.is_opening = 'No'
@@ -135,7 +136,7 @@ class GSTR3BReport(Document):
 			and (i.is_nil_exempt = 1 or i.is_non_gst = 1 or p.gst_category = 'Registered Composition') and
 			month(p.posting_date) = %s and year(p.posting_date) = %s
 			and p.company = %s and p.company_gstin = %s
-			GROUP BY p.place_of_supply, i.is_nil_exempt, i.is_non_gst""",
+		""",
 			(self.month_no, self.year, self.company, self.gst_details.get("gstin")), as_dict=1)
 
 		inward_nil_exempt_details = {
@@ -149,18 +150,24 @@ class GSTR3BReport(Document):
 			}
 		}
 
+		address_state_map = get_address_state_map()
+
 		for d in inward_nil_exempt:
-			if d.place_of_supply:
-				if (d.is_nil_exempt == 1 or d.get('gst_category') == 'Registered Composition') \
-					and state == d.place_of_supply.split("-")[1]:
-					inward_nil_exempt_details["gst"]["intra"] += d.base_amount
-				elif (d.is_nil_exempt == 1 or d.get('gst_category') == 'Registered Composition') \
-					and state != d.place_of_supply.split("-")[1]:
-					inward_nil_exempt_details["gst"]["inter"] += d.base_amount
-				elif d.is_non_gst == 1 and state == d.place_of_supply.split("-")[1]:
-					inward_nil_exempt_details["non_gst"]["intra"] += d.base_amount
-				elif d.is_non_gst == 1 and state != d.place_of_supply.split("-")[1]:
-					inward_nil_exempt_details["non_gst"]["inter"] += d.base_amount
+			if not d.place_of_supply:
+				d.place_of_supply = "00-" + cstr(state)
+
+			supplier_state = address_state_map.get(d.supplier_address) or state
+
+			if (d.is_nil_exempt == 1 or d.get('gst_category') == 'Registered Composition') \
+				and cstr(supplier_state) == cstr(d.place_of_supply.split("-")[1]):
+				inward_nil_exempt_details["gst"]["intra"] += d.base_amount
+			elif (d.is_nil_exempt == 1 or d.get('gst_category') == 'Registered Composition') \
+				and cstr(supplier_state) != cstr(d.place_of_supply.split("-")[1]):
+				inward_nil_exempt_details["gst"]["inter"] += d.base_amount
+			elif d.is_non_gst == 1 and cstr(supplier_state) == cstr(d.place_of_supply.split("-")[1]):
+				inward_nil_exempt_details["non_gst"]["intra"] += d.base_amount
+			elif d.is_non_gst == 1 and cstr(supplier_state) != cstr(d.place_of_supply.split("-")[1]):
+				inward_nil_exempt_details["non_gst"]["inter"] += d.base_amount
 
 		return inward_nil_exempt_details
 
@@ -419,6 +426,11 @@ class GSTR3BReport(Document):
 
 		return ",".join(missing_field_invoices)
 
+def get_address_state_map():
+	return frappe._dict(
+		frappe.get_all('Address', fields=['name', 'gst_state'], as_list=1)
+	)
+
 def get_json(template):
 	file_path = os.path.join(os.path.dirname(__file__), '{template}.json'.format(template=template))
 	with open(file_path, 'r') as f:
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index b5284793e13..86a08828b26 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -1477,6 +1477,28 @@ class TestSalesOrder(FrappeTestCase):
 		self.assertEqual(so.items[0].work_order_qty, wo.produced_qty)
 		self.assertEqual(mr.status, "Manufactured")
 
+	def test_sales_order_with_shipping_rule(self):
+		from erpnext.accounts.doctype.shipping_rule.test_shipping_rule import create_shipping_rule
+		shipping_rule = create_shipping_rule(shipping_rule_type = "Selling", shipping_rule_name = "Shipping Rule - Sales Invoice Test")
+		sales_order = make_sales_order(do_not_save=True)
+		sales_order.shipping_rule = shipping_rule.name
+
+		sales_order.items[0].qty = 1
+		sales_order.save()
+		self.assertEqual(sales_order.taxes[0].tax_amount, 50)
+
+		sales_order.items[0].qty = 2
+		sales_order.save()
+		self.assertEqual(sales_order.taxes[0].tax_amount, 100)
+
+		sales_order.items[0].qty = 3
+		sales_order.save()
+		self.assertEqual(sales_order.taxes[0].tax_amount, 200)
+
+		sales_order.items[0].qty = 21
+		sales_order.save()
+		self.assertEqual(sales_order.taxes[0].tax_amount, 0)
+
 def automatically_fetch_payment_terms(enable=1):
 	accounts_settings = frappe.get_doc("Accounts Settings")
 	accounts_settings.automatically_fetch_payment_terms = enable
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.json b/erpnext/stock/doctype/delivery_note/delivery_note.json
index 55a4c956a67..7ebc4eed751 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.json
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.json
@@ -1315,7 +1315,7 @@
  "idx": 146,
  "is_submittable": 1,
  "links": [],
- "modified": "2021-10-09 14:29:13.428984",
+ "modified": "2022-03-10 14:29:13.428984",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Delivery Note",
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index 2a4d63954a7..75ccd86153e 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -13,7 +13,10 @@ from frappe.utils import cint, flt
 from erpnext.controllers.accounts_controller import get_taxes_and_charges
 from erpnext.controllers.selling_controller import SellingController
 from erpnext.stock.doctype.batch.batch import set_batch_nos
-from erpnext.stock.doctype.serial_no.serial_no import get_delivery_note_serial_no
+from erpnext.stock.doctype.serial_no.serial_no import (
+	get_delivery_note_serial_no,
+	update_serial_nos_after_submit,
+)
 from erpnext.stock.utils import calculate_mapped_packed_items_return
 
 form_grid_templates = {
@@ -220,6 +223,9 @@ class DeliveryNote(SellingController):
 		# Updating stock ledger should always be called after updating prevdoc status,
 		# because updating reserved qty in bin depends upon updated delivered qty in SO
 		self.update_stock_ledger()
+		if self.is_return:
+			update_serial_nos_after_submit(self, "items")
+
 		self.make_gl_entries()
 		self.repost_future_sle_and_gle()
 
@@ -342,25 +348,21 @@ def update_billed_amount_based_on_so(so_detail, update_modified=True):
 	from frappe.query_builder.functions import Sum
 
 	# Billed against Sales Order directly
-	si = frappe.qb.DocType("Sales Invoice").as_("si")
 	si_item = frappe.qb.DocType("Sales Invoice Item").as_("si_item")
 	sum_amount = Sum(si_item.amount).as_("amount")
 
-	billed_against_so = frappe.qb.from_(si).from_(si_item).select(sum_amount).where(
-		(si_item.parent == si.name) &
+	billed_against_so = frappe.qb.from_(si_item).select(sum_amount).where(
 		(si_item.so_detail == so_detail) &
 		((si_item.dn_detail.isnull()) | (si_item.dn_detail == '')) &
-		(si_item.docstatus == 1) &
-		(si.update_stock == 0)
+		(si_item.docstatus == 1)
 	).run()
 	billed_against_so = billed_against_so and billed_against_so[0][0] or 0
 
 	# Get all Delivery Note Item rows against the Sales Order Item row
-
 	dn = frappe.qb.DocType("Delivery Note").as_("dn")
 	dn_item = frappe.qb.DocType("Delivery Note Item").as_("dn_item")
 
-	dn_details = frappe.qb.from_(dn).from_(dn_item).select(dn_item.name, dn_item.amount, dn_item.si_detail, dn_item.parent, dn_item.stock_qty, dn_item.returned_qty).where(
+	dn_details = frappe.qb.from_(dn).from_(dn_item).select(dn_item.name, dn_item.amount, dn_item.si_detail, dn_item.parent).where(
 		(dn.name == dn_item.parent) &
 		(dn_item.so_detail == so_detail) &
 		(dn.docstatus == 1) &
@@ -385,11 +387,7 @@ def update_billed_amount_based_on_so(so_detail, update_modified=True):
 
 		# Distribute billed amount directly against SO between DNs based on FIFO
 		if billed_against_so and billed_amt_agianst_dn < dnd.amount:
-			if dnd.returned_qty:
-				pending_to_bill = flt(dnd.amount) * (dnd.stock_qty - dnd.returned_qty) / dnd.stock_qty
-			else:
-				pending_to_bill = flt(dnd.amount)
-			pending_to_bill -= billed_amt_agianst_dn
+			pending_to_bill = flt(dnd.amount) - billed_amt_agianst_dn
 			if pending_to_bill <= billed_against_so:
 				billed_amt_agianst_dn += pending_to_bill
 				billed_against_so -= pending_to_bill
@@ -798,3 +796,6 @@ def make_inter_company_transaction(doctype, source_name, target_doc=None):
 	}, target_doc, set_missing_values)
 
 	return doclist
+
+def on_doctype_update():
+	frappe.db.add_index("Delivery Note", ["customer", "is_return", "return_against"])
diff --git a/erpnext/stock/doctype/delivery_note/test_delivery_note.py b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
index 16c892128a6..fc3dce1ee90 100644
--- a/erpnext/stock/doctype/delivery_note/test_delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
@@ -822,6 +822,11 @@ class TestDeliveryNote(FrappeTestCase):
 
 		automatically_fetch_payment_terms(enable=0)
 
+	def test_standalone_serial_no_return(self):
+		dn = create_delivery_note(item_code="_Test Serialized Item With Series", is_return=True, qty=-1)
+		dn.reload()
+		self.assertTrue(dn.items[0].serial_no)
+
 def create_return_delivery_note(**args):
 	args = frappe._dict(args)
 	from erpnext.controllers.sales_and_purchase_return import make_return_doc
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 32c72fd2f64..8ede95539b3 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -392,6 +392,7 @@ class Item(Document):
 			self.validate_properties_before_merge(new_name)
 			self.validate_duplicate_product_bundles_before_merge(old_name, new_name)
 			self.validate_duplicate_website_item_before_merge(old_name, new_name)
+			self.delete_old_bins(old_name)
 
 	def after_rename(self, old_name, new_name, merge):
 		if merge:
@@ -420,6 +421,9 @@ class Item(Document):
 					frappe.db.set_value(dt, d.name, "item_wise_tax_detail",
 											json.dumps(item_wise_tax_detail), update_modified=False)
 
+	def delete_old_bins(self, old_name):
+		frappe.db.delete("Bin", {"item_code": old_name})
+
 	def validate_duplicate_item_in_stock_reconciliation(self, old_name, new_name):
 		records = frappe.db.sql(""" SELECT parent, COUNT(*) as records
 			FROM `tabStock Reconciliation Item`
@@ -500,11 +504,11 @@ class Item(Document):
 		existing_allow_negative_stock = frappe.db.get_value("Stock Settings", None, "allow_negative_stock")
 		frappe.db.set_value("Stock Settings", None, "allow_negative_stock", 1)
 
-		repost_stock_for_warehouses = frappe.db.sql_list("""select distinct warehouse
-			from tabBin where item_code=%s""", new_name)
+		repost_stock_for_warehouses = frappe.get_all("Stock Ledger Entry",
+				"warehouse", filters={"item_code": new_name}, pluck="warehouse", distinct=True)
 
 		# Delete all existing bins to avoid duplicate bins for the same item and warehouse
-		frappe.db.sql("delete from `tabBin` where item_code=%s", new_name)
+		frappe.db.delete("Bin", {"item_code": new_name})
 
 		for warehouse in repost_stock_for_warehouses:
 			repost_stock(new_name, warehouse)
diff --git a/erpnext/stock/doctype/item/test_item.py b/erpnext/stock/doctype/item/test_item.py
index d7671b1d714..d57308b2afa 100644
--- a/erpnext/stock/doctype/item/test_item.py
+++ b/erpnext/stock/doctype/item/test_item.py
@@ -371,23 +371,24 @@ class TestItem(FrappeTestCase):
 		variant.save()
 
 	def test_item_merging(self):
-		create_item("Test Item for Merging 1")
-		create_item("Test Item for Merging 2")
+		old = create_item(frappe.generate_hash(length=20)).name
+		new = create_item(frappe.generate_hash(length=20)).name
 
-		make_stock_entry(item_code="Test Item for Merging 1", target="_Test Warehouse - _TC",
+		make_stock_entry(item_code=old, target="_Test Warehouse - _TC",
 			qty=1, rate=100)
-		make_stock_entry(item_code="Test Item for Merging 2", target="_Test Warehouse 1 - _TC",
+		make_stock_entry(item_code=old, target="_Test Warehouse 1 - _TC",
+			qty=1, rate=100)
+		make_stock_entry(item_code=new, target="_Test Warehouse 1 - _TC",
 			qty=1, rate=100)
 
-		frappe.rename_doc("Item", "Test Item for Merging 1", "Test Item for Merging 2", merge=True)
+		frappe.rename_doc("Item", old, new, merge=True)
 
-		self.assertFalse(frappe.db.exists("Item", "Test Item for Merging 1"))
+		self.assertFalse(frappe.db.exists("Item", old))
 
 		self.assertTrue(frappe.db.get_value("Bin",
-			{"item_code": "Test Item for Merging 2", "warehouse": "_Test Warehouse - _TC"}))
-
+			{"item_code": new, "warehouse": "_Test Warehouse - _TC"}))
 		self.assertTrue(frappe.db.get_value("Bin",
-			{"item_code": "Test Item for Merging 2", "warehouse": "_Test Warehouse 1 - _TC"}))
+			{"item_code": new, "warehouse": "_Test Warehouse 1 - _TC"}))
 
 	def test_item_merging_with_product_bundle(self):
 		from erpnext.selling.doctype.product_bundle.test_product_bundle import make_product_bundle
diff --git a/erpnext/stock/doctype/material_request/material_request.js b/erpnext/stock/doctype/material_request/material_request.js
index 5f53be0869e..e68b0abfb94 100644
--- a/erpnext/stock/doctype/material_request/material_request.js
+++ b/erpnext/stock/doctype/material_request/material_request.js
@@ -214,6 +214,7 @@ frappe.ui.form.on('Material Request', {
 					material_request_type: frm.doc.material_request_type,
 					plc_conversion_rate: 1,
 					rate: item.rate,
+					uom: item.uom,
 					conversion_factor: item.conversion_factor
 				},
 				overwrite_warehouse: overwrite_warehouse
@@ -392,6 +393,7 @@ frappe.ui.form.on("Material Request Item", {
 	item_code: function(frm, doctype, name) {
 		const item = locals[doctype][name];
 		item.rate = 0;
+		item.uom = '';
 		set_schedule_date(frm);
 		frm.events.get_item_data(frm, item, true);
 	},
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.json b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.json
index b54a90eed35..6d4b4a19bd2 100755
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.json
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.json
@@ -1165,7 +1165,7 @@
  "idx": 261,
  "is_submittable": 1,
  "links": [],
- "modified": "2022-02-01 11:40:52.690984",
+ "modified": "2022-03-10 11:40:52.690984",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Purchase Receipt",
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index 33e40c85f1a..52f10ea9c83 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -926,3 +926,6 @@ def get_item_account_wise_additional_cost(purchase_document):
 						account.base_amount * item.get(based_on_field) / total_item_cost
 
 	return item_account_wise_cost
+
+def on_doctype_update():
+	frappe.db.add_index("Purchase Receipt", ["supplier", "is_return", "return_against"])
diff --git a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
index fa28f2252de..0017fa7ee11 100644
--- a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
@@ -769,8 +769,7 @@ class TestPurchaseReceipt(FrappeTestCase):
 			update_purchase_receipt_status,
 		)
 
-		pr = make_purchase_receipt(do_not_submit=True)
-		pr.submit()
+		pr = make_purchase_receipt()
 
 		update_purchase_receipt_status(pr.name, "Closed")
 		self.assertEqual(
diff --git a/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py b/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
index 977d470995e..f4d52ad73d1 100644
--- a/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
+++ b/erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.py
@@ -118,7 +118,8 @@ def repost(doc):
 		doc.set_status('Failed')
 		raise
 	finally:
-		frappe.db.commit()
+		if not frappe.flags.in_test:
+			frappe.db.commit()
 
 def repost_sl_entries(doc):
 	if doc.based_on == 'Transaction':
diff --git a/erpnext/stock/doctype/serial_no/serial_no.py b/erpnext/stock/doctype/serial_no/serial_no.py
index ee08e38f33c..bf62f50c971 100644
--- a/erpnext/stock/doctype/serial_no/serial_no.py
+++ b/erpnext/stock/doctype/serial_no/serial_no.py
@@ -394,7 +394,7 @@ def update_serial_nos(sle, item_det):
 	if not sle.is_cancelled and not sle.serial_no and cint(sle.actual_qty) > 0 \
 			and item_det.has_serial_no == 1 and item_det.serial_no_series:
 		serial_nos = get_auto_serial_nos(item_det.serial_no_series, sle.actual_qty)
-		frappe.db.set(sle, "serial_no", serial_nos)
+		sle.db_set("serial_no", serial_nos)
 		validate_serial_no(sle, item_det)
 	if sle.serial_no:
 		auto_make_serial_nos(sle)
@@ -516,13 +516,16 @@ def update_serial_nos_after_submit(controller, parentfield):
 		if controller.doctype == "Stock Entry":
 			warehouse = d.t_warehouse
 			qty = d.transfer_qty
+		elif controller.doctype in ("Sales Invoice", "Delivery Note"):
+			warehouse = d.warehouse
+			qty = d.stock_qty
 		else:
 			warehouse = d.warehouse
 			qty = (d.qty if controller.doctype == "Stock Reconciliation"
 				else d.stock_qty)
 		for sle in stock_ledger_entries:
 			if sle.voucher_detail_no==d.name:
-				if not accepted_serial_nos_updated and qty and abs(sle.actual_qty)==qty \
+				if not accepted_serial_nos_updated and qty and abs(sle.actual_qty) == abs(qty) \
 					and sle.warehouse == warehouse and sle.serial_no != d.serial_no:
 						d.serial_no = sle.serial_no
 						frappe.db.set_value(d.doctype, d.name, "serial_no", sle.serial_no)
diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index ba1081f4dce..353bfa452b6 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -838,11 +838,13 @@ class update_entries_after(object):
 		for warehouse, data in self.data.items():
 			bin_name = get_or_make_bin(self.item_code, warehouse)
 
-			frappe.db.set_value('Bin', bin_name, {
-				"valuation_rate": data.valuation_rate,
+			updated_values = {
 				"actual_qty": data.qty_after_transaction,
 				"stock_value": data.stock_value
-			})
+			}
+			if data.valuation_rate is not None:
+				updated_values["valuation_rate"] = data.valuation_rate
+			frappe.db.set_value('Bin', bin_name, updated_values)
 
 
 def get_previous_sle_of_current_voucher(args, exclude_current_voucher=False):