Right now, commands (and lazy attributes) relies on NGSI registrations. Since NGSI registration support is not the best (https://github.com/telefonicaid/fiware-orion/issues/4337), and subscriptions are more powerful, the idea of this issue is to make the IoTAs compatible to subscription based commands and lazzy attributes.
Describe the solution you'd like
Right now, commands (and lazy attributes) relies on NGSI registrations. Since NGSI registration support is not the best (https://github.com/telefonicaid/fiware-orion/issues/4337), and subscriptions are more powerful, the idea of this issue is to make the IoTAs compatible to subscription based commands and lazzy attributes.
There is a twin issue in Orion: https://github.com/telefonicaid/fiware-orion/issues/4397
Describe alternatives you've considered
Registrations (existing one)