Lightwave LScript:
MakeSurfsUnique.ls

This LScript is designed to be used to make all the surfaces in a given Lightwave scene unique across all objects. I wrote this as a solution for applying the SG_AmbOcc_Exp surface shader to all objects in a scene. Lightwave doesn’t apply the shader properly to all surfaces if there are duplicates, so this will allow you to fix that problem, and then apply the shader correctly.

It will prompt you for each duplicate found and you can enter new surface names for each object.