The stuff (Things/Channels/Items/etc) that gets added automatically from PaperUI is stored in the jsonDB. (userdata/jsondb folder)
From the info above, I assume that you are using the Z-Way binding. Correct? (I didn’t understand the mqtt part)
In this case, you would discover your things in PaperUI and then you can choose:
a) Use simple linking mode and let OH2 auto-create the items and the links to the channels
or
b) Use flat config files for your items and define the links in there like Rich wrote above
To find the correct channel name of a thing to be used for the item definition, use PaperUI → Configuration → Things. You can copy the name from there and paste in in your `{ channel =“” } section.
Example (Z-Wave but not Z-Way …I believe that it’s similar) bound Items for the PaperUI channel shown in the screenshot below:
Dimmer WDim01_Dim "Staircase LED Dim [%d %%]" <slider> (gZWave,GF_P02_Corridor) {channel="zwave:device:ZW090C:node4:switch_dimmer"}
Switch WDim01_Switch "Staircase LED Switch" <switch> (gZWave,GF_P02_Corridor) {channel="zwave:device:ZW090C:node4:switch_dimmer"}
