We will remove the topologies functionality from Bosch IoT Things as it wasn’t used on a large scale during its beta phase.
We plan to provide simpler concepts to structure thing entities in the future.
Meanwhile you still have the option to use non-device-related thing entities to describe simple structures. E.g. use an own namespace for your ‘topology-things’ and just reference the things that are part of that topology in one of its features. You could also reference other ‘topology-things’ in another feature of it.