Hello @Steffen Brendler ,
Thanks for your query.
1.Please contact Microsoft Clearinghouse to activate these CALs to specific RDlicensing server through telephone:
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc754874(v=ws.11)?redirectedfrom=MSDN
2.If the problem still exists, it's recommended to contact VLSC to split license into several package id so as to decrease CAL number of single package.
https://www.microsoft.com/licensing/servicecenter/default.aspx
Best regards,
Leila
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