https://i.ibb.co/ZRc2VjCf/image.png

I tried to manually connect it to a diffuse slot in an octane material and ran some script to get the shader details in console and got this

Shader: Decal texture | TypeID: 1064614 | Object: <c4d.BaseShader object called Decal texture/OctaneShader with ID ...

I wrote this script for importing decals as it's quite tideous having to setup a new decal every single time.
This script takes the path of a material directory as input and creates an Octane Decale object from the available texture maps.

It's a pretty straight forward tool so just a fast-forwarded ...