Windows 11 Source Media Issues
Update to 9.0 (current as of today)
W11 is not supported in 8.2, therefore this error message is expected.
With 9.0 W11 is supported and with the new media manager this works well.
(if you just update to 9.0 during the update the fingerprint should be updated else you just can update it in the GUI after update)
You also need to be on 9.0 for Secure Boot, which is mandatory for deploying W11 (except you use the well known registry hacks)