No Primary Partition Slots Available (code 1708)
A restore plan terminates with the following error: Partition number is exceeded
By convention, there are exactly four primary partition table entries in the MBR partition table scheme.
The easiest solution for this issue is to create enough restore plans to follow the MBR convention of 4 partition maximum. To learn more about image-based restore plans, refer to the Image-Based Backup Restore chapter of the help documentation.