Hi there,

Usually, data that is not visible is related to security. With OData, the security can be on either your source (i.e. does your OData source allow you access to the data in question) or in your application (i.e. does your user have access to the data in question).

Bear in mind, that you might be able to view the data when debugging, as the access control to the data is only applied before sending it to the client.

Hope it helps!