Huh, thanks for the reply Tolga. Right, I am trying to use the Admin REST API, not the GRAPHQL. But, I have a "private app" for the shop, and not a "sales channel" app. I was under the impression "private apps" can have all the privileges marketplace apps can have. Can someone from Shopify team advice? Do I need to convert my private app into a sales channel app? If so, how? Is it possible to have a sales channel app targeted for a single shop? We are not trying to write an app for the marketplace.