Muti-Material(Unified) Error

I create project by Muti-Material (Unified) Mode. But, UDIM is not applied!
instamat_multimat_error

Hello @keiiketani,

Apologies for the delay in response as many of us were at SIGGRAPH this past week. Could you show the setup of how your materials are assigned to the model as well the the layout for the UVs?

For Multi-Material (Unified) projects, each material section should be applied to different portions of the mesh, and the UVs should be unwrapped for each material section.

Thanks!