Provide the current master encryption key to the system before you retry the command. If you use USB flash drives to manage the master encryption key of this system, connect one of the USB flash drives containing the current key to each node. If you are using a key server to manage encryption keys of this system, ensure that the system, key servers, and network are configured correctly so that a key server that contains the current master encryption key is online to the system.
Examine the event log to check for hardware errors. Contact IBM Support if you are unable to determine the cause.