diff --git a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
index 8a2e9450e97..f492a03daf5 100644
--- a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
@@ -2023,11 +2023,7 @@ class TestSalesInvoice(unittest.TestCase):
 		frappe.local.enable_perpetual_inventory['_Test Company 1'] = old_perpetual_inventory
 		frappe.db.set_value("Stock Settings", None, "allow_negative_stock", old_negative_stock)
 
-	def test_sle_if_target_warehouse_exists_accidentally(self):
-		"""
-			Check if inward entry exists if Target Warehouse accidentally exists
-			but Customer is not an internal customer.
-		"""
+	def test_sle_for_target_warehouse(self):
 		se = make_stock_entry(
 			item_code="138-CMS Shoe",
 			target="Finished Goods - _TC",
@@ -2048,9 +2044,9 @@ class TestSalesInvoice(unittest.TestCase):
 		sles = frappe.get_all("Stock Ledger Entry", filters={"voucher_no": si.name},
 			fields=["name", "actual_qty"])
 
-		# check if only one SLE for outward entry is created
-		self.assertEqual(len(sles), 1)
-		self.assertEqual(sles[0].actual_qty, -1)
+		# check if both SLEs are created
+		self.assertEqual(len(sles), 2)
+		self.assertEqual(sum(d.actual_qty for d in sles), 0.0)
 
 		# tear down
 		si.cancel()
diff --git a/erpnext/controllers/selling_controller.py b/erpnext/controllers/selling_controller.py
index 0158a1120f9..bb269f3db22 100644
--- a/erpnext/controllers/selling_controller.py
+++ b/erpnext/controllers/selling_controller.py
@@ -424,7 +424,7 @@ class SellingController(StockController):
 					or (cint(self.is_return) and self.docstatus==2)):
 						sl_entries.append(self.get_sle_for_source_warehouse(d))
 
-				if d.target_warehouse and self.get("is_internal_customer"):
+				if d.target_warehouse:
 					sl_entries.append(self.get_sle_for_target_warehouse(d))
 
 				if d.warehouse and ((not cint(self.is_return) and self.docstatus==2)
@@ -559,6 +559,12 @@ class SellingController(StockController):
 				frappe.throw(_("Row {0}: Delivery Warehouse ({1}) and Customer Warehouse ({2}) can not be same")
 					.format(d.idx, warehouse, warehouse))
 
+		if not self.get("is_internal_customer") and any(d.get("target_warehouse") for d in items):
+			msg = _("Target Warehouse is set for some items but the customer is not an internal customer.")
+			msg += " " + _("This {} will be treated as material transfer.").format(_(self.doctype))
+			frappe.msgprint(msg, title="Internal Transfer", alert=True)
+
+
 	def validate_items(self):
 		# validate items to see if they have is_sales_item enabled
 		from erpnext.controllers.buying_controller import validate_item_type
diff --git a/erpnext/crm/doctype/lead/lead.js b/erpnext/crm/doctype/lead/lead.js
index 95cf03241bc..999599ce95b 100644
--- a/erpnext/crm/doctype/lead/lead.js
+++ b/erpnext/crm/doctype/lead/lead.js
@@ -51,7 +51,7 @@ erpnext.LeadController = class LeadController extends frappe.ui.form.Controller
 		}
 	}
 
-	add_lead_to_prospect (frm) {
+	add_lead_to_prospect () {
 		frappe.prompt([
 			{
 				fieldname: 'prospect',
@@ -65,7 +65,7 @@ erpnext.LeadController = class LeadController extends frappe.ui.form.Controller
 			frappe.call({
 				method: 'erpnext.crm.doctype.lead.lead.add_lead_to_prospect',
 				args: {
-					'lead': frm.doc.name,
+					'lead': cur_frm.doc.name,
 					'prospect': data.prospect
 				},
 				callback: function(r) {
@@ -79,41 +79,41 @@ erpnext.LeadController = class LeadController extends frappe.ui.form.Controller
 		}, __('Add Lead to Prospect'), __('Add'));
 	}
 
-	make_customer (frm) {
+	make_customer () {
 		frappe.model.open_mapped_doc({
 			method: "erpnext.crm.doctype.lead.lead.make_customer",
-			frm: frm
+			frm: cur_frm
 		})
 	}
 
-	make_opportunity (frm) {
+	make_opportunity () {
 		frappe.model.open_mapped_doc({
 			method: "erpnext.crm.doctype.lead.lead.make_opportunity",
-			frm: frm
+			frm: cur_frm
 		})
 	}
 
-	make_quotation (frm) {
+	make_quotation () {
 		frappe.model.open_mapped_doc({
 			method: "erpnext.crm.doctype.lead.lead.make_quotation",
-			frm: frm
+			frm: cur_frm
 		})
 	}
 
-	make_prospect (frm) {
+	make_prospect () {
 		frappe.model.with_doctype("Prospect", function() {
 			let prospect = frappe.model.get_new_doc("Prospect");
-			prospect.company_name = frm.doc.company_name;
-			prospect.no_of_employees = frm.doc.no_of_employees;
-			prospect.industry = frm.doc.industry;
-			prospect.market_segment = frm.doc.market_segment;
-			prospect.territory = frm.doc.territory;
-			prospect.fax = frm.doc.fax;
-			prospect.website = frm.doc.website;
-			prospect.prospect_owner = frm.doc.lead_owner;
+			prospect.company_name = cur_frm.doc.company_name;
+			prospect.no_of_employees = cur_frm.doc.no_of_employees;
+			prospect.industry = cur_frm.doc.industry;
+			prospect.market_segment = cur_frm.doc.market_segment;
+			prospect.territory = cur_frm.doc.territory;
+			prospect.fax = cur_frm.doc.fax;
+			prospect.website = cur_frm.doc.website;
+			prospect.prospect_owner = cur_frm.doc.lead_owner;
 
 			let lead_prospect_row = frappe.model.add_child(prospect, 'prospect_lead');
-			lead_prospect_row.lead = frm.doc.name;
+			lead_prospect_row.lead = cur_frm.doc.name;
 
 			frappe.set_route("Form", "Prospect", prospect.name);
 		});
diff --git a/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py b/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
index 0bf5aeae711..a1df9cfd0eb 100644
--- a/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
+++ b/erpnext/maintenance/doctype/maintenance_schedule/maintenance_schedule.py
@@ -47,7 +47,7 @@ class MaintenanceSchedule(TransactionBase):
 			"Yearly": 365
 		}
 		for item in self.items:
-			if item.periodicity and item.start_date:
+			if item.periodicity and item.periodicity != "Random" and item.start_date:
 				if not item.end_date:
 					if item.no_of_visits:
 						item.end_date = add_days(item.start_date, item.no_of_visits * days_in_period[item.periodicity])
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index 5542cd00d4c..f75b52cec8e 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -185,7 +185,6 @@ class DeliveryNote(SellingController):
 			if not d['warehouse'] and frappe.db.get_value("Item", d['item_code'], "is_stock_item") == 1:
 				frappe.throw(_("Warehouse required for stock Item {0}").format(d["item_code"]))
 
-
 	def update_current_stock(self):
 		if self.get("_action") and self._action != "update_after_submit":
 			for d in self.get('items'):
diff --git a/erpnext/stock/doctype/delivery_note_item/delivery_note_item.json b/erpnext/stock/doctype/delivery_note_item/delivery_note_item.json
index b05090a237e..a96c29925e5 100644
--- a/erpnext/stock/doctype/delivery_note_item/delivery_note_item.json
+++ b/erpnext/stock/doctype/delivery_note_item/delivery_note_item.json
@@ -468,7 +468,7 @@
    "width": "100px"
   },
   {
-   "depends_on": "eval:parent.is_internal_customer",
+   "depends_on": "eval:parent.is_internal_customer || doc.target_warehouse",
    "fieldname": "target_warehouse",
    "fieldtype": "Link",
    "hidden": 1,
@@ -759,7 +759,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-02-23 01:04:08.588104",
+ "modified": "2021-10-05 12:12:44.018872",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Delivery Note Item",
@@ -767,4 +767,4 @@
  "permissions": [],
  "sort_field": "modified",
  "sort_order": "DESC"
-}
\ No newline at end of file
+}