# Object details vs. list summaries

Many of the **List all** operations, for example, `GET /sheets`, return only an abbreviated object for each object returned. For full details, read a single item, such as `GET /sheets/{sheetId}`. In many cases, you can refine the exact object properties to be returned by using **include** and **exclude** query parameters.

The JSON representation of the objects returned from the **List all** REST endpoints only include a subset of the resource's properties.

> **Important:** The objects returned from the Java and C# SDKs represent the omitted properties with NULLs.