I have Developer Edition org with data cloud. I can create and manually deploy Data Kits without issues, but I need to do it via the API. Specifically, I need to use the `ssot/data-kits/{dataKitDevName}` endpoint (as described here: https://developer.salesforce.com/docs/data/data-cloud-dev/guide/dc-deploy-data-kits-using-connect-api.html). However, I receive a 404 status code whenever I try to access this endpoint. No endpoints with the `ssot` prefix are accessible to me. They all return a 404 status code. I attempted to connect via an external app with enable client credentials flow, and the request is executed by a user with the "Data Architect" permission. Package ssot there is in installed package tab. Why might this endpoint be missing?
For 404 - Not Found status, I would suspect the url you are using to hit the endpoint. Can you share the url you are using?
If you can use Postman, here's another doc with link to a readymade collection.
https://developer.salesforce.com/docs/data/connectapi/guide/get-started.html