We have got a Solution.
Apparently removing MD5 from java.security file
in /SUM/jvm/jre/lib/security from the following parameter removes this
error.
jdk.certpath.disabledAlgoritms=MD2,MD5, RSA keySize < 1024
jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 768
Those who are getting the same might find this useful.. We could resume SUM after removing MD5 from these parameters