CMMVC9403E The SCSI LUN IDs currently allocated to the volume mapping are different in existing access IO groups.

Explanation
This error can occur when the system cannot allocate the same SCSI LUN IDs in all access I/O
groups because different SCSI LUN IDs are allocated to the volume mapping in the access I/O groups
in the current access I/O group set.

User response
Complete one of the following steps.
Remove access from the access I/O groups that have mismatched SCSI LUN IDs and then retry the
command, including the removed access I/O group and the new access I/O group to allocate matching
SCSI LUN IDs. Make sure that the required SCSI LUN ID is available in all access I/O groups. 

Remove the host mapping to the volume that is using different SCSI LUN IDs and then re-create
the host mapping, including the new access I/O group with matching SCSI LUN IDs. 

Use the -allowmismatchedscsiids option to assign the volume a different
SCSI LUN ID from the existing IDs. Not all hosts support this configuration. 