Minor fix
diff --git a/erpnext/accounts/doctype/sales_invoice/pos.py b/erpnext/accounts/doctype/sales_invoice/pos.py
index f34e87d..070dbeb 100644
--- a/erpnext/accounts/doctype/sales_invoice/pos.py
+++ b/erpnext/accounts/doctype/sales_invoice/pos.py
@@ -312,6 +312,7 @@
 			'link_name': customer
 		})
 		address.save(ignore_permissions = True)
+		frappe.db.commit()
 
 def validate_item(doc):
 	for item in doc.get('items'):