With the latest release, Bosch IoT Hub, the device connectivity layer of Bosch IoT Device Management, provides an update to Eclipse Hono 2.0.0.
As a result, the previously deprecated topic command /+/+/req/# has been deleted and is no longer supported.
Please note that the external Bosch IoT Hub API has no other changes, but for more information on Eclipse Hono 2.0.0 you can refer to the Eclipse Hono release notes: https://www.eclipse.org/hono/release-notes/#200.