The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
Data Engineering Streaming includes a repository to store data related to connections and source metadata. Data Engineering Streaming uses application services in the Informatica domain to access data in the repository.
Data Engineering Streaming stores structured streaming mappings in the Model repository. You can manage the Model repository in the Developer tool.