FMM19196E The master volume master_volname of the remote mirror relationship does not have a change volume assigned.
Explanation
For a remote Global Mirror FlashCopy backup operation to be started, IBM Storage Protect Snapshot requires the remote mirroring master volumes to have a change volume assigned.
Operator response
Use the IBM SAN Volume Controller Storage Management GUI or command-line interface (SVC CLI) to fix the problem. Assign a dedicated volume as the change volume of the master volume.