The following warning is thrown during backup job execution:
Partition ## exceeds disk ## layout by ## bytes
To correct the allocation issue you can run a Windows built-in shrink operation for the volume that exceeds the disks layout.
For example: Warning says Partition 2 exceeds disk 0 layout by 1024000 bytes
According to the Disk Management, Partition 2 is volume C:
Dividing 1024000 by 1048576 and rounding to the integer would give the result of 1 MB.
Preforming a 1MB shrink of the volume C:
If you have further questions, open a support case as follows: