Seems there are many posts on the forums about this and Linux OS.  Check this one but there are many more with a Google search - https://forums.veeam.com/veeam-backup-replication-f2/failed-to-modify-disks-when-doing-an-instant-restore-to-hyperv-t77368.html

https://www.veeam.com/blog/vmware-to-hyper-v-migration.html

​@Chris.Childerhose 

For another linux VM yes i can successfull migrate to hyper-v using same method. Only for this one VM the migration is failed.

Then I would suggest contacting support for assistance.

yes, i already open ticket to veeam support. WIll post here about the solution if the issue was resolved.

https://www.veeam.com/blog/vmware-to-hyper-v-migration.html
https://en.ittrip.xyz/windows/troubleshooting/linux-hyperv-veeam

this article may help you

What have you tried so far?

When you edit the VM the disk size doesn’t show something more than 2 decimal places does it

for example

100.00224443433434 GB

Sounds good let us know how things go and the solution.