diff --git a/patches/november_2012/update_delivered_billed_percentage_for_pos.py b/patches/november_2012/update_delivered_billed_percentage_for_pos.py
new file mode 100644
index 0000000..3e9adf4
--- /dev/null
+++ b/patches/november_2012/update_delivered_billed_percentage_for_pos.py
@@ -0,0 +1,15 @@
+def execute():
+	import webnotes
+	from webnotes.model.code import get_obj
+	
+	sc_obj = get_obj("Sales Common")
+	
+	si = webnotes.conn.sql("""select si.name 
+		from `tabSales Invoice` si, `tabSales Invoice Item` si_item
+		where si_item.parent = si.name
+		and si.docstatus = 1
+		and ifnull(si.is_pos, 0) = 1
+		and ifnull(si_item.sales_order, '') != ''
+	""")
+	for d in si:
+		sc_obj.update_prevdoc_detail(1, get_obj("Sales Invoice", d[0], with_children=1))
\ No newline at end of file
diff --git a/patches/patch_list.py b/patches/patch_list.py
index 5cacfb2..55a8bb4 100644
--- a/patches/patch_list.py
+++ b/patches/patch_list.py
@@ -691,4 +691,8 @@
 		'patch_module': 'patches.november_2012',
 		'patch_file': 'communication_sender_and_recipient',
 	},
+	{
+		'patch_module': 'patches.november_2012',
+		'patch_file': 'update_delivered_billed_percentage_for_pos',
+	},
 ]
\ No newline at end of file