About reserved prefixes

Users, developers, and apps can all define metaobjects and metafields on resources in Shopify. For example, a product review app might add metafields to a shop's product resource to keep track of reviews for a product, or a user might create a new custom object to manage the designers that they source pieces from. By default, metafields and metaobjects are owned by Shopify and provide no restrictions to reading, writing, or modifying. In the case of the product review app, another product review app could overwrite the metafield that the app was using to track reviews.