Yes, that was the first thing I tried after setting up the item, restarting OH.
Maybe another issues comes into play here, though I’ve never had any issue with this before:
I have an KNX IP Gateway set to Tunnel. The KNX device, however, was converted using the GitHub project from @jo47011 - the knx file generates a thing with the adress 0.0.0. Meaning I only have one knx thing with all the GAs as channels in there. This thing is always offlinem but I can still control and see/read the values of every channel/item.
Is this the Bridge or is it the generic thing?
The former is ok, the latter is completely wrong, as a generic knx Thing, representing the whole bus but not a single device must not have any address (i.e. “individual address” in english or “physikalische Adresse” in german).