meshing in Gambit
 

dear all, please guide me, whenever I am meshing my geometry in gambit 2.4.6, using cooper scheme it is showing desired meshing scheme cannot be maintained using cooper tool for face 1

what is meant by it and how it can be resolved as the volume 1 is showing the mesh in geometry but it is not been meshed properly as displayed by the dialogue box.

please need a urgent help
meshing