Greetings Krishna,
You can use the "Objects" tab in the Order view (IW32 t-code) to assign multiple Notifications to an Order.
Please note a Notification can only be assigned to 1 Order at a time (therefore it is a N:1 relationship between Notifications and Orders).
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.