Thank you Robert for your response. Actually i stuck in session 3 sales order
and in specific tutorial 3 how to create sales order in the end of this
tutorial  i go to jump tool bar to create a sale related packing list But every
time i tried to do so i get the same error . ( No sale related packing list
related). I also attach a file or screen shot with this message.

I hope i explain it better this time the problem i am facing.

Thanks