Substance Shader
The Substance shader loads a Substance Asset’s ouput channels (see also Substance) as textures in a material channel and wherever the shader can otherwise be included. Substance shaders are usually created automatically and are loaded into the corresponding material channels. You can also load a Substance shader manually, assign an asset and select the corresponding output channel.
If the asset and the Substance shader link doesn’t work (e.g., because the Substance shader was loaded manually and had no link), the following error texture will be loaded:
In this case, simply re-link the Substance shader (Asset field).