Added ability to create a Return Sales Invoice/ Credit Note against a delivery note of type return (#15266)

* Remove make subscription button on delivery note if it is of type returns

* Added 'issue_credit_note' checkbox on delivery note to pass a Sales Inv of type return if checked while creating a return delivery note

* Added logic to auto-create Return Sales Invoice/ Credit Note if issue_credit_note checkbox is checked while return delivey note is submited

* Update delivery_note.py

erpnext/stock/doctype/delivery_note/delivery_note.js

@@ -167,7 +167,7 @@ erpnext.stock.DeliveryNoteController = erpnext.selling.SellingController.extend(
 		}
 		erpnext.stock.delivery_note.set_print_hide(doc, dt, dn);
 
-		if(doc.docstatus==1 && !doc.auto_repeat) {
+		if(doc.docstatus==1 && !doc.is_return && !doc.auto_repeat) {
 			cur_frm.add_custom_button(__('Subscription'), function() {
 				erpnext.utils.make_subscription(doc.doctype, doc.name)
 			}, __("Make"))

erpnext/stock/doctype/delivery_note/delivery_note.json

@@ -456,6 +456,39 @@
    "translatable": 0, 
    "unique": 0
   }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "depends_on": "is_return", 
+   "fieldname": "issue_credit_note", 
+   "fieldtype": "Check", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Issue Credit Note", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
   {
    "allow_bulk_edit": 0, 
    "allow_in_quick_entry": 0, 
@@ -4168,7 +4201,7 @@
  "istable": 0, 
  "max_attachments": 0, 
  "menu_index": 0, 
- "modified": "2018-08-29 04:03:32.749794", 
+ "modified": "2018-08-30 03:50:25.791869", 
  "modified_by": "Administrator", 
  "module": "Stock", 
  "name": "Delivery Note", 

erpnext/stock/doctype/delivery_note/delivery_note.py

@@ -212,7 +212,8 @@ class DeliveryNote(SellingController):
 
 		if not self.is_return:
 			self.check_credit_limit()
-
+		elif self.issue_credit_note:
+			self.make_return_invoice()
 		# 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()
@@ -314,6 +315,16 @@ class DeliveryNote(SellingController):
 
 		self.load_from_db()
 
+	def make_return_invoice(self):
+		try:
+			return_invoice = make_sales_invoice(self.name)
+			return_invoice.is_return = True
+			return_invoice.save()
+			return_invoice.submit()
+			frappe.msgprint(_("Credit Note {0} has been created automatically").format(return_invoice.name))
+		except:
+			frappe.throw(_("Could not create Credit Note automatically, please uncheck 'Issue Credit Note' and submit again"))
+
 def update_billed_amount_based_on_so(so_detail, update_modified=True):
 	# Billed against Sales Order directly
 	billed_against_so = frappe.db.sql("""select sum(amount) from `tabSales Invoice Item`