Groovy IDE or Classic app

Hi I would like to know If is better to add The Divice On SmartThing Groovy IDE , or doesn’t matter if I add them on the SmartThing app ? Thanks

Only the App(s) can put the Hub into “join mode” for Zigbee, Z-Wave, and LAN devices.

While you can create custom device Handlers (and assign them to already added devices) using the IDE, you can’t “add” a real Device using the IDE.

The IDE is one way to add virtual Devices (like Virtual Switches, Virtual Contact Sensors) for special use cases.

Where did you get the impression you could use the IDE for adding “normal” Devices?