An attempt was made to move the preferred node of a volume to an I/O group on a different site when the volume is a target of a FlashCopy mapping with a source volume in an active-active relationship. For FlashCopy mappings that copy 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 another I/O group on the same site. Alternatively, to move the volume to an I/O group on the other site, remove the FlashCopy mapping or convert the HyperSwap® source volume to a regular volume by using the management GUI or the rmvolumecopy command first.