Hmm... O.k. I do not have access to a 2015 install, so this screenshot is made from an earlier version of TrueImage Server. Hopefully it will be of aid anyway:
Above, I have entered the disk-management part of Acronis TrueImage and as you see, the partition on both disks are primary.
Acronis TrueImage will as far as I remember clone a disk only to free space and that is why I mentioned that you probably need to delete the partition in place on the SSD.
If there are no partition in place, the disk should come up as 'Unallocated' which holds true for a small portion of Disk1 above.
In the screenshot above, I did right-click Disk2 (you should select your SSD) and placed the pointer over the choice Delete volume. Left-click on the choice, then left-click on 'Commit'.
Now retry the process of cloning the disk to the SSD and when asked to select destination, select the SSD.