You can use the ldm command to store the current configuration of a logical domain on the service processor. You can add a configuration, specify a configuration to be used, remove a configuration, and list the configurations. See the ldm(1M) man page.
You can also use an ALOM CMT Version 1.3 command to select a configuration to boot, see Using LDoms With ALOM CMT.
For information about managing configurations, see Managing Logical Domains Configurations.