In https://eclipse-tractusx.github.io/docs-kits/kits/digital-twin-kit/software-development-view/ there are still examples like
urn:bamm:io.catenax.material_for_recycling:1.1.0#MaterialForRecycling
this should be changed to
urn:samm:io.catenax.material_for_recycling:1.1.0#MaterialForRecycling