How to Add custom fields to Systeme schema markup

1. Open your JSON Schema App dashboard and navigate to Manage Schema → Product
2. Choose the product you want to modify and click Edit Schema
3. Use the Add Field option to include extra attributes such as Brand, GTIN, MPN, Color, Size, or Material
4. Fill in the necessary values for each added field
5. Click Save Schema to apply the updates

Once saved, the app will automatically refresh the JSON-LD structured data for that product in the background on your Systeme website.