Q.What Is Causing The Viburnum Bark Destruction Shown On The Picture And What Can I Do About It.
Bark damage is a uniform waffle effect. We see no bugs.
Certified GKH Gardening Expert
Unfortunately, your photo did not come through. I am unable to diagnose the issue. It could be a crust fungus, or even the a more deadly bracket fungus (unfortunately, there are many types) from the description.
Here is an article for more information:
Here is more information on the care of Viburnum: