Assets used in item previews need to be properly licensed for commercial use. As the asset is not being resold or redistributed, you will not need a re-sale or re-distribution license as you would for use of that asset in the main file. However, you will still need a license for a commercial use (reproduction) for use within the preview. It’s important to read each license of any asset you’re intending to use carefully to make sure your use of the asset complies with the license terms.
please help on this