HyperSwap® volumes contain a copy on each site, and copying data from one site to the other introduces significant unnecessary data movement. For a FlashCopy mapping that copies data from a HyperSwap® volume, the source volume of the FlashCopy mapping must be entirely on the same site as the target volume. This command would spread the volume across both sites.
Retry the command with the new volume copy in the same site as the existing volume copy.