Smart texture not showing correctly on some part of the mesh

[GBK]

Hello, I am new to Painter so excuse me if my question makes no sense.
I imported a .fbx which seems to have correctly unwrapped, I baked the textures. However when applying a smart material it oly shows correctly on the front part of my model. The other parts stain plain color. What is weird is that on the 2d side the material seems to be applied correctly.
Could someone guide me and tell me if I am missing something ?

Thanks

[CAGameDEV]

Smart materials require certain mesh maps to work correctly. Either check the stack to see what you need or just bake all your mesh maps.