CMMVC9326E The command failed because the maximum number of host ports for an I/O group would be exceeded.
Explanation
Adding the specified ports would result in a total number of host ports that exceeds the limit that can be configured in an I/O group.
User response
Identify I/O groups where the limit would be exceeded and remove unused hosts or host ports, then retry the command. Alternately, specify a different set of I/O groups that the host can access volumes from.