---
title: Issue with Multi-Material Sub-Materials with Occlusion texture
description: Issue with Multi-Material Sub-Materials when an Occlusion texture is applied to the opacity.
---

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# Issue with Multi-Material Sub-Materials with Occlusion texture

## Issue with Multi-Material Sub-Materials when an Occlusion texture is applied to the opacity.

### Issue

Library models created in KeyShot 2023.3 have an issue with Multi-Material Sub-Materials when an Occlusion texture is applied to the opacity.

The Occlusion connected to a sub-material as an opacity map is broken in 2023.3 and 2024.1 specifically if the model was created in KeyShot 2023. If the model is created in 2024, it works fine.  

### Environment Details

- KeyShot 
    - 2023.3

### Workaround

Assigning a new identical material fixes the issue in both KeyShot 2023 and KeyShot 2024

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