Substitute ID in Item Class
Substitute ID is very useful when you already have a similar attribute in Magento then you can map one ID with the substitute ID in the Item Class.
![Substitute ID in MC item class sync preferences](/wp-content/uploads/2023/12/Substitute-ID-in-MC-item-class-sync-preferences-1024x472.png)
In Magento, you will be able to view the Substitute ID.
Here the product created as OCTDEMO Class will create a product in Magento with the substitute item class. Substitute ID will help you to identify the Item class ID.