you can upgrade from 15 to 21. refer the chart here https://www.veritas.com/support/en_US/article.100018032
While entering the licenses, you can download the slf file and put that while installing 21.
Thank you, Gurvinder for your help.
But I can only generate a license key for version 15. (see Attachment)
I was able to install version 15 with the generated license key. Then I wanted to update version 15 to version 21. But the authorization-ID cannot be verified.
I also have the authorization to download version 15 - 21.1! (see Attachment)
Hallo Marianne, many thanks for your response.
In the license portal it looks like the service has expired. But when I query the licenses in BackupExec15-program, the maintenance is displayed until March 16, 2021. (see Attachment)
Is the service status displayed in the software or in the license portal decisive?
The Licensing portal is the one that counts - it is directly linked to your purchase (Entitlement ID) and maintenance renewals.
The licensing portal shows valid maintenance for Windows Agent, but no maintenace for BE Server Ed.
Please speak to your local reseller about your best licensing options - I think ML (Multilanguage) and SBS (Small Business Server) licenses have been discontinued.
Hallo Marianne, thank you for your reply.
On June 15, 2020, I updated a BackupExec SBS 2012, to version 21.1, with an expired service contract. Apparently it was still possible at this point.
Yes then i have to get a new service contract or licence, from my Veritas dealer.
Once again, thank you very much for your help.