@Abhishek_Sharma1 You can try below steps:
- Go to admin and click on external applications as mentioned below
- The public app name will be there and click on edit option
- After edit application click on Add Scopes and select the data service api resources and select particular fields according to your requirement.
Attaching screenshot for same!!
@namanjain132 reply
@Abhishek_Sharma1 Try to give your app url in the given Redirect URL Textbox after that save option will be enabled !!
@namanjain132 I used the url after publishing the app in public app configuration. I am still having the same entity error.
@Abhishek_Sharma1 Go to manage access and try to give access to particular user !! Hope it works