The requirement is when I save a notification an order should also be created and save.
Is it possible in standard?
The answer provided in the referenced link above is wrong. There is not any standard option to automatically create a order from a notification. The referenced customizing allows a notification to be automatically created when a new order is created. Maybe that would be the way to go - In the situation you describe, create the order and allow system to automatically create the notification.
Alternative, while creating the notification press the 'create order' icon and fill in the order details then both notification and order are created at the same time. This is what you want but there is not a 'automatic' order creation feature.
There is no standard configuration for automatic order creation from the Notification. You can achieve this through help of abaper. Just call the BAPI of order at notification save event and pass the values for order.