I'm currently checking with our data team. I'll update when I get an ETA. Thanks
I have been given this information from our data team:
Hotfix .msp file contains multiple language codes. SCUP will not accept multiple language codes within the same XML element. The file must be reauthored by Citrix to contain only a single language code. It looks like for the time being we are unable to support these patches through vCenter Protect Update Catalog.