Error Message SYSMGR-3-CORE_OP_FAILED Format: Core operation failed: %s
Explanation Mainly use to display failure on core operation in general.
Recommended Action Contact the Cisco Technical Assistance Center (TAC) through the Cisco Support web site http://www.cisco.com/tac.
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/system_messages/reference/sl_ListMsg.html