Hello again,
I found something which could resolve my problem in the "OnCommand® Unified Manager 6.2 API Developer's Guide". There is a section called "Unsubscription of a root member and destruction of protection artifacts". In my case I deleted a protection artifact (volume and protection set) but only in filer not in the management environment OCUM 6.2.
Does anybody know how to work with this API and where I have to make the API calls?
Regards,
Felix