Dimmed command in 3 of 4 DBs

In 3 of my 4 databases the command Edit > Copy URL is always dimmed.
Datebase properties > Options provides no clue; they are identical across all 4.
Creation dates provide no clue; the one that works is neither the youngest nor the oldest.

I can script this, but hey…

There’s not enough info to work with. What is shown in the Generic Info inspector for the problematic document?

There is no problematic document. The command is always dimmed, regardless of the selection.

Even if a selected item has a URL according to the Info inspector?

Ahh… Your question made me realise I misunderstood what that command does. I assumed it copied an item’s reference URL - and it doesn’t, right?
My bad.

[I have one DB where all items have a sidecar file. The pairs are linked thru their reference URLs. So, yes, there all items have a URL.]

That’s right, this is a different command (Edit > Copy Item Link)

Thank you. That command does what I was looking for.