After I have deployed my model and go to applications, when I want to create predictions using the Predictor I get an error message , "Your organization has reached its application limit of 200. Delete unused applications or contact your Data Robot representative."
Sorry that's slowing you down. Do you know if your organization is really using 200 apps? Is this a trial account?
Any context like that would help. If you're in an Org with many users, you may have a lot of prototype / test apps that were created by users who aren't really using them in production. If that's the case then you can deactivate or delete the unused apps.