Incremental back up doesn't work and is reported to be corrupted;.

I have been using incredemnental back ups all along to make chnages.

Anyway i own an ssd and i decided to erase all the data on the ssd and then restore everything back again. Almopst towards the end of the restoration an error msg shows.

Volume 17 cannot be found. I was shocked. How couold this be so i have restored images before. The image is saved on my other hdd and i just don't understand why do they get errors like this,~!!!