I am followed that steps .
1.Navigate to System Administration–>Manage Apps
2.Click the square disable button beside “referenceapplication.registrationapp.registerPatient” to disable the integrated Registration App configuration.
3.Add a new App Definition by clicking “Add App Definition”.
4.Give your new App a name, perhaps “referenceapplication.registrationapp.myRegisterPat”.
5.Copy the latest template for the registration App, found here (note that the square brackets before and after should not be used).
6.Paste this into the Definition (required) field. 7.Modify the ID to represent the ID you specified in step 4 above. For example, change “id”: “referenceapplication.registrationapp.registerPatient”, to “id”: “referenceapplication.registrationapp.myRegisterPat”,
8.Modify the URL line to represent the ID you specified in step 4 above. For example, change “url”: “registrationapp/registerPatient.page?appId=referenceapplication.registrationapp.registerPatient”, to “url”: “registrationapp/registerPatient.page?appId=referenceapplication.registrationapp.myRegisterPat”,
9.If you prefer, you can change the “description” and “label” fields to your liking, for example, name them in your language. You can also change the icon and order to your liking.
10.Save the new App configuration.
I am getting Error
This JSON i am pasted insdie [ ] data