When invoking OData services, specifically while fetching business information from the Data services, you may choose which attributes are returned.
This configuration is completely optional, and it applies to:
1. MyStuff invocations.
2. Searches invocations
3. Processes data (cases) invocations.
Note that by default, returned attributes are those which have been set in the default template that shows information for an entity.
You may override such definition, by setting for each entity which information will be available for OData invocations.
Changing the definition of the template
In order to modify which information is returned, create a Content type template for that entity or modify the existing one, provided that there is one set for that entity.