Are you talking about errors reported in backup server? If so, have you installed the latest cumulative patch that adds vSphere 7.0 U2 support? Thanks!
BUT -huge one
I did a restore of a copy of the Windows with Veeam to 11.0.0.837. It work flawlessly against the same ESXI-vCenter. Issue is on veeam side IMHO.
You will need to work with support to find the answers to these questions
All I'm saying is, this relevant code was "touched" in the patch - so a regression is a possibility. However, the issue could as well be caused by something specific to your environment.
Because if this was a common issue, then I'd expect at least a few other users report the same by now, with the patch downloaded a few thousand times already.