Elevation surface is not showing in 3D scene content

[HoiWaiCheung]

Hello,

I'm trying to add a TIN layer in 3D scene. I saw how people do online, but I could not find the Elevation surface item in the scene content. No TIN is showing in my 3D scene now.

 

  

[DavidPike]

Display TINs in 2D and 3D—ArcGIS Pro | Documentation

paragraph "import arcpyAdd a TIN as a new custom elevation surface"

Or iss it not showing as addable?

[HoiWaiCheung]

Do you mean in the 3D map property -> Elevation Surface -> add surface layer (add TIN)?

In the property of 3D map, it shows I have a TIN layer, but the Local/ Globe 3D scene still show a blank surface. No TIN.