I want to show Custom Block in Admin>sale>order>view. i have tried many methods available on forums but nothing works for me. actually I am creating a custom shipping module that will generate tracking number and print CN PDF.
Please Help me out , I want to know the correct way of showing custom block in admin order view page.
Please check below file
for call that file you need to add event for that.
Hope it will help you, if work then marks as a solution.