KNX error 500

Hello, i try to install my knx with openhab 2.5. The router is online, The knx device also. When i want to add a thing it states always error 500. what do i need to put in for the Channel id and Lable?

Welcome to the Community!

That would depend on the device.

it is a switch, so i took 1.001. , but it is not working