As Workiva adds new functionality and bug fixes to the API over time, make sure your code can handle new JSON properties gracefully. Also, make sure your code doesn't depend on the order in which JSON objects are returned, unless explicitly stated in this documentation.
When new functionality is incompatible with existing code, such as with a new concept, Workiva increments the version to indicate that you can ignore the new feature until ready to implement the code to work with the new level.