Authentication to server failed.Server certificate could not be generated Check eDirectory authentication credentials. Refer to migration.log for more details

log files shows

2010-07-23 09:02:15,809 INFO - Migration Framework:Getting SourceServer certificate: using getSSCert command
2010-07-23 09:02:15,809 INFO - Migration Framework:getSourceServerCert():Finding Source Server eDirectory Tree Name using command: ndsstat -h 10.72.128.15
2010-07-23 09:02:16,224 INFO - Migration Framework:Getting SourceServer certificate:Using 10.72.128.15 to retrieve Source Server certificate
2010-07-23 09:02:16,225 INFO - Migration Framework:Getting SourceServer certificate:executing command: LC_ALL=en_US.UTF-8 /opt/novell/oes-install/util/getSSCert -a "10.72.128.15" -t "DCPSTREE" -u "admin.dcps"
2010-07-23 09:02:19,441 ERROR - Migration Framework:getSSCert:Command failed with message
2010-07-23 09:02:19,762 INFO - Migration Framework:getSSCert:We are not in DHost. pid = -1208887592
2010-07-23 09:02:19,763 INFO - Migration Framework:getSSCert:
2010-07-23 09:02:19,763 ERROR - Migration Framework:getSSCert:Login failed with error code -632
2010-07-23 09:02:19,763 ERROR - Migration Framework:getSSCert:getSSCert failed - the self-signed root certificate was not extracted from the directory
2010-07-23 09:02:19,763 ERROR - Migration Framework:getSSCert: