Hi,
under you catalog folder (catalog/indexes) you can just rename/remove the folder and this will allow you to start the copy with the same ID.
so as an example if your failed ID is called copy-1 you will see something like this
# cp/catalog/indexes# ls -ltr
total 184
drwxr-xr-x 3 root root 4096 Nov 10 08:30 copy-1
# xcp/catalog/indexes#
if you remove `copy-1` folder then you will be fine.