As pointed out in Nmap smb enum users not returning any results - Greenbone Community Edition - Greenbone Community Forum the Nmap NSE NASL wrappers are a deprecated concept. As the appliances are using newer nmap version these won’t work there too.
The Nmap NSE NASL wrappers are kept in the feed for the following reasons:
- To allow GSE users to install an older nmap version and use the wrappers
- For archiving purposes, if VTs are removed from the feed older reports (which might still exist) referencing these VTs are missing the metadata about these VTs.
As you seems to have found out the IT-Grundschutz Scans should work on the GSE/GCE as well. The related documentation and the previously attached IT-Grundschutz scan config can be found here:
https://docs.greenbone.net/GSM-Manual/gos-4/en/compliance.html#it-grundschutz