Recently I needed to restore a SAP Oracle Database and I received this error below:
After open a ticket with Veeam support I discover that this error has relation with SAP Oracle Databases specifically. The solution was a fix on Veeam Explorer for Oracle. After applying it my restore ran successfully.
However, it doesn't have a public KB about this error and only support Veeam has access for this fix.
So, if any of you get this kind of error, I recommend open a ticket with Veeam to solve your problem as soon as possible.