Disclosure Management expects the (base) taxonomy file that is used to be in a certain format. Primarily, this concerns that the folder structure starts with a “http” (or “https”) folder.
The problem is, that many regulators publish taxonomies that are not in this format.
For example: https://it.xbrl.org/materiali/tassonomie/tassonomia-principi-contabili-italiani-2018/
In order for Disclosure Managment to be able to use this taxonomy, you need to augment it with missing files.
This WIKI explains this procedure.