What product/components do you use and which version/fix level are you on?
Is your question related to the free trial, or to a production (customer) instance?
What are you trying to achieve? Please describe it in detail.
Do you get any error messages? Please provide a full error message screenshot and log file.
The assets are not visible in the cockpit app that are created using the c8y_IsDeviceGroup tag in the API call.
Have you installed all the latest fixes for the products and systems you are using?
did you also specify the required
"type" : "c8y_DeviceGroup", as already mentioned in the other topic you created?