Hi Hans-Jürgen,
> Therer seems to be a checking looking for an updating function, and apply() cannot, of course, be classified as such.
> Do I make a mistake, or is it a limitation, or a bug?
That’s a limitation of the official function. You can use our custom
update:apply function as a resort [1].
Hope this helps,
Christian
[1]
https://docs.basex.org/wiki/Update_Module#update:apply