Every business process is a small piece of your backend app's logic. Business processes designed to work with data: search, get, update, delete, mutate and make all actions inside of the backend part of your project. All basic business processes for every data model are created automatically and called the system BPs. System BPs can't be edited or deleted, also they are not visible in the common list of business processes. But you can use system BPs in endpoints and call them from your business processes.