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 on the same site as the target volume.
Retry the command and move the volume to a storage pool on the same site. Alternatively, to move the volume to a storage pool on the other site, convert the HyperSwap source volume to a regular volume by using the management GUI or the rmvolumecopy command first.